Observation

HematologyAlso known as: AB Stn TissAlso known as: AB-Hyalur Stn TissAlso known as: AB-PAS Stn TissN/A

Measures the number of B lymphocytes (CD19+ cells) in blood or tissue.

Normal Range
Consult your provider
N/A
Abnormal Levels
Consult your provider
Specimen Type
Blood

Why This Biomarker Matters

CD19 cell counts help diagnose leukemias, lymphomas, and immunodeficiencies. Abnormal levels guide oncology treatment decisions and immune function assessment.

Overview

CD19 is a marker found on B lymphocytes, white blood cells that produce antibodies and fight infections. A CD19 cell count measures the number of B cells in your blood or bone marrow. Abnormally low CD19 counts may indicate immunodeficiency, leukemia, or complications from certain medications or treatments. Elevated counts can suggest chronic lymphocytic leukemia or other lymphoproliferative disorders. This test is particularly useful in diagnosing blood cancers and immune disorders.

Research & Evidence

100 publications

Sort:
Action Observation Combined With Virtual Reality Promotes Motor Recovery After Stroke: A Randomized Controlled Trial.
Stroke · 2026
PMID: 41847766
The effect of motor imagery on corticospinal excitability and inhibition in healthy adults: a systematic review.
Brain Cogn · 2026
PMID: 41966567
Tonsillectomy Complication Rates Are Comparable Among 2- and 3-Year-Old Children: A Systematic Review and Meta-Analysis.
Otolaryngol Head Neck Surg · 2026
PMID: 41910931
Neural-molecular signatures of insomnia: Insights from signed differential mapping and gene expression analysis.
Neuroimage · 2026
PMID: 41990895
Efficacy, immunogenicity, and safety of a cell culture-derived quadrivalent influenza vaccine compared with a non-influenza vaccine in infants and children across five influenza seasons: a phase 3, multinational, observer-blind, randomised controlled trial.
Lancet Child Adolesc Health · 2026
PMID: 41962984
Evaluation of a face-washing behaviour change intervention for trachoma prevention in Oromia, Ethiopia (Stronger SAFE): secondary outcomes of a cluster-randomised controlled trial.
Lancet Glob Health · 2026
PMID: 41895308
The Dossanov Intramedullary Telescopic System in the Treatment of Bone Deformities in Children with Osteogenesis Imperfecta. Real-world evidence studies.
Clin Ter · 2026
PMID: 42047125
Anlotinib + Toripalimab maintenance in Extensive-Stage small cell lung Cancer: Clinical efficacy and preclinical mechanism of anlotinib-induced neuroendocrine differentiation Suppression via Notch1.
Lung Cancer · 2026
PMID: 41825180
Effectiveness and Tolerability of Vortioxetine in Major Depressive Disorder: A Real-World Study in Switzerland.
Clin Drug Investig · 2026
PMID: 41832924
Observation on the Efficacy of Hyperbaric Oxygen as Adjuvant Therapy for Breast Cancer-Related Wounds: A Case Report.
Cancer Rep (Hoboken) · 2026
PMID: 42055769

Research data from MEDLINE/PubMed · 100 articles

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

51714-4Primary
Microscopic observation [Identifier] in Blood by Giemsa stain
10355-6
Microscopic observation [Identifier] in Bone marrow by Wright Giemsa stain
19765-7
Microscopic observation [Identifier] in Cervical or vaginal smear or scraping by Cyto stain
10524-7
Microscopic observation [Identifier] in Cervix by Cyto stain
18500-9
Microscopic observation [Identifier] in Cervix by Cyto stain.thin prep
49050-8
Microscopic observation [Identifier] in Endocervical brush by Cyto stain
11545-1
Microscopic observation [Identifier] in Specimen by Acid fast stain
655-1
Microscopic observation [Identifier] in Specimen by Acid fast stain.Kinyoun modified
10525-4
Microscopic observation [Identifier] in Specimen by Cyto stain
664-3
Microscopic observation [Identifier] in Specimen by Gram stain
666-8
Microscopic observation [Identifier] in Specimen by India ink prep
667-6
Microscopic observation [Identifier] in Specimen by KOH preparation
20431-3
Microscopic observation [Identifier] in Specimen by Smear
680-9
Microscopic observation [Identifier] in Specimen by Wet preparation
681-7
Microscopic observation [Identifier] in Specimen by Wright stain
10526-2
Microscopic observation [Identifier] in Sputum by Cyto stain
6473-3
Microscopic observation [Identifier] in Tissue by Trichrome stain
11070-0
Microscopic observation [Identifier] in Urine by Cyto stain
2692-2
Osmolality of Serum or Plasma
mosm/kg
2695-5
Osmolality of Urine
mosm/kg
2965-2
Specific gravity of Urine
5811-5
Specific gravity of Urine by Test strip
{Spec grav}
10817-5
Microscopic observation [Identifier] in Tissue by Trichrome stain.Gomori-Wheatley
6656-3
Microscopic observation [Identifier] in Tissue by Acid fast stain.Kinyoun modified
6465-9
Microscopic observation [Identifier] in Duodenal fluid by Trichrome stain
14132-5
Color of Gastric fluid
29776-2
Microscopic observation [Identifier] in Blood by Brilliant cresyl blue
6474-1
Microscopic observation [Identifier] in Urethra by Gram stain
9786-5
Microscopic observation [Identifier] in Blood or Marrow by Periodic acid-Schiff stain
10689-8
Microscopic observation [Identifier] in Nail by KOH preparation
662-7
Microscopic observation [Identifier] in Specimen by Giemsa stain
14362-8
Microscopic observation [Identifier] in Throat by Gram stain
32811-2
Microscopic observation [Identifier] in Bronchial specimen by Iron hematoxylin stain
10778-9
Microscopic observation [Identifier] in Tissue by Butyrate esterase stain
32026-7
Microscopic observation [Identifier] in Nose by Gram stain
646-0
Microscopic observation [Identifier] in Sputum by Acid fast stain.Kinyoun modified
678-3
Microscopic observation [Identifier] in Specimen by Trichrome stain
32699-1
Microscopic observation [Identifier] in Blood by Acid fast stain
14348-7
Specific gravity of Peritoneal fluid by Refractometry
2966-0
Specific gravity of 24 hour Urine
45043-7
Microscopic observation [Identifier] in Specimen by Tzanck smear
14350-3
Specific gravity of Synovial fluid by Refractometry
10789-6
Microscopic observation [Identifier] in Tissue by Hematoxylin-eosin-Harris regressive stain
10782-1
Microscopic observation [Identifier] in Tissue by Congo red stain
17598-4
Specific gravity of Synovial fluid
32190-1
Microscopic observation [Identifier] in Cerebral spinal fluid
32824-5
Microscopic observation [Identifier] in Specimen by Tartrate-resistant acid phosphatase stain
14349-5
Specific gravity of Pleural fluid by Refractometry
14617-5
Appearance of Pericardial fluid
14365-1
Microscopic observation [Identifier] in Ear by Gram stain
14356-0
Microscopic observation [Identifier] in Vaginal fluid by KOH preparation
1887-9
Appearance of Amniotic fluid
14364-4
Microscopic observation [Identifier] in Eye by Gram stain
38386-9
Color of Amniotic fluid
11018-9
Microscopic observation [Identifier] in Blood or Marrow by Peroxidase stain
11020-5
Microscopic observation [Identifier] in Blood or Marrow by Tartrate-resistant acid phosphatase stain
13509-5
Microscopic observation [Identifier] in Blood by Crystal violet stain
654-4
Microscopic observation [Identifier] in Specimen by Acid fast stain.Kinyoun
33270-0
Microscopic observation [Identifier] in Buffy Coat by Light microscopy
11480-1
Microscopic observation [Identifier] in Urine by Acid fast stain
14363-6
Microscopic observation [Identifier] in Synovial fluid by Gram stain
11021-3
Microscopic observation [Identifier] in Blood or Marrow by Terminal deoxynucleotidyl transferase stain
18328-5
Microscopic observation [Identifier] in Body fluid by Other stain
2689-8
Osmolality of Amniotic fluid
mosm/kg
32817-9
Microscopic observation [Identifier] in Specimen by Myeloperoxidase stain
32816-1
Microscopic observation [Identifier] in Specimen by Terminal deoxynucleotidyl transferase stain
10637-7
Microscopic observation [Identifier] in Tissue by Night blue stain
72408-8
Microscopic observation [Identifier] in Anal by Gram stain
11134-4
Appearance of Spun Body fluid
6470-9
Microscopic observation [Identifier] in Stool by Wet preparation
47282-9
MCV [Entitic mean volume] in Cord blood
fL
18498-6
Microscopic observation [Identifier] in Breast fine needle aspirate by Cyto stain
10527-0
Microscopic observation [Identifier] in Tissue by Cyto stain
33455-7
Appearance of Sputum
31189-4
Microscopic observation [Identifier] in Neck mass fine needle aspirate by Cyto stain
68383-9
Microscopic observation [Identifier] in Body fluid by KOH preparation
2696-3
Osmolality of Specimen
mosm/kg
32812-0
Microscopic observation [Identifier] in Bronchial specimen by Oil red O stain
29606-1
Appearance of Gastric fluid
18499-4
Microscopic observation [Identifier] in Nipple discharge by Cyto stain
670-0
Microscopic observation [Identifier] in Specimen by Methenamine silver nitrate stain
14619-1
Appearance of Plasma
14661-3
Color of Pericardial fluid
11478-5
Microscopic observation [Identifier] in Stool by Acid fast stain
14358-6
Microscopic observation [Identifier] in Aspirate by Gram stain
6471-7
Microscopic observation [Identifier] in Tissue by Other stain
32188-5
Microscopic observation [Identifier] in Cerebral spinal fluid by Acid fast stain
62242-3
MCV [Entitic mean volume] in Red Blood Cells from Fetus by Automated count
fL
18497-8
Microscopic observation [Identifier] in Thyroid fine needle aspirate by Cyto stain
645-2
Microscopic observation [Identifier] in Sputum by Acid fast stain.Kinyoun
11068-4
Microscopic observation [Identifier] in Body fluid by Cyto stain
14319-8
Microscopic observation [Identifier] in Vaginal fluid by Wet preparation
9397-1
Color of Stool
2694-8
Osmolality of 24 hour Urine
mosm/kg
16400-4
Appearance of Seminal plasma
644-5
Microscopic observation [Identifier] in Skin by KOH preparation
35347-4
Microscopic observation [Identifier] in Specimen by Immunofluorescence
638-7
Microscopic observation [Identifier] in Cerebral spinal fluid by India ink prep
86243-3
Color of Sputum
44933-0
Specific gravity of 24 hour Urine by Refractometry
11477-7
Microscopic observation [Identifier] in Sputum by Acid fast stain
27112-2
Microscopic observation [Identifier] in Body fluid by Gram stain
53785-2
Microscopic observation [Identifier] in Urine by Wright stain
11479-3
Microscopic observation [Identifier] in Tissue by Acid fast stain
38196-2
Appearance of Blood
48712-4
Microscopic observation [Identifier] in Genital specimen by Gram stain
24002-8
Microscopic observation [Identifier] in Bronchial specimen by Acid fast stain
32785-8
Microscopic observation [Identifier] in Specimen by Non-gynecological cytology method
657-7
Microscopic observation [Identifier] in Specimen by Acridine orange stain
6665-4
Microscopic observation [Identifier] in Tissue by Hematoxylin and eosin stain
8250-3
Microscopic observation [Identifier] in Stool by Electron microscopy
653-6
Microscopic observation [Identifier] in Urine by Gram stain
33271-8
Microscopic observation [Identifier] in Blood by Malaria thin smear
14318-0
Microscopic observation [Identifier] in Cervix by Wet preparation
14357-8
Microscopic observation [Identifier] in Cerebral spinal fluid by Gram stain
32189-3
Microscopic observation [Identifier] in Body fluid by Acid fast stain
42210-5
Microscopic observation [Identifier] in Bronchial specimen by Cyto stain
15200-9
Osmolality of Body fluid
mosm/kg
14662-1
Color of Pleural fluid
2693-0
Osmolality of Stool
mosm/kg
14317-2
Microscopic observation [Identifier] in Genital specimen by Wet preparation
32151-3
Microscopic observation [Identifier] in Vaginal fluid by Non-gynecological cytology method
11158-3
Appearance of Serum
10357-2
Microscopic observation [Identifier] in Wound by Gram stain
6664-7
Microscopic observation [Identifier] in Tissue by Gram stain
32803-9
Appearance of Bronchial specimen
32168-7
Color of Spun Cerebral spinal fluid
6469-1
Microscopic observation [Identifier] in Stool by Trichrome stain
14660-5
Color of Peritoneal fluid
32802-1
Color of Bronchial specimen
19766-5
Microscopic observation [Identifier] in Cervical or vaginal smear or scraping by Cyto stain Narrative
35414-2
Specific gravity of Body fluid by Refractometry
18326-9
Microscopic observation [Identifier] in Cervix by Other stain
53786-0
Microscopic observation [Identifier] in Stool by Wright stain
14621-7
Appearance of Peritoneal fluid
14620-9
Appearance of Pleural fluid
11135-1
Appearance of Spun Cerebral spinal fluid
2964-5
Specific gravity of Body fluid
658-5
Microscopic observation [Identifier] in Specimen by Calcofluor white
72357-7
Microscopic observation [Presence] in Specimen by Acid fast stain
53733-2
Color of Spun Body fluid
32700-7
Microscopic observation [Identifier] in Blood by Malaria smear
9796-4
Color of Stone
649-4
Microscopic observation [Identifier] in Stool by Gram stain
29636-8
Appearance of Stool
48148-1
Osmolality of Urine by calculated by sum of electrolytes
mosm/kg
10569-2
Color of Semen
14664-7
Color of Synovial fluid
29605-3
Appearance of Synovial fluid
656-9
Microscopic observation [Identifier] in Specimen by Acid fast stain.Ziehl-Neelsen
14618-3
Appearance of Stone
14361-0
Microscopic observation [Identifier] in Vaginal fluid by Gram stain
11546-9
Microscopic observation [Identifier] in Specimen by Other stain
33512-5
Color of Specimen
33513-3
Specific gravity of Specimen
10333-3
Appearance of Cerebral spinal fluid
5810-7
Specific gravity of Urine by Refractometry
{Spec grav}
14725-6
[Type] of Body fluid
10335-8
Color of Cerebral spinal fluid
18182-6
Osmolality of Serum or Plasma by calculated by sum of electrolytes
mosm/kg
676-7
Microscopic observation [Identifier] in Specimen by Rhodamine-auramine fluorochrome stain
648-6
Microscopic observation [Identifier] in Sputum by Gram stain
6824-7
Color of Body fluid
9335-1
Appearance of Body fluid
12235-8
Microscopic observation [Identifier] in Urine sediment by Light microscopy
925-8
Blood product disposition [Type]
933-2
Blood product type
936-5
Blood product unit [Identifier]
53326-5
Specific gravity of Urine by Automated test strip
{Spec grav}
33511-7
Appearance of Specimen
50562-8
Specific gravity of Urine by Refractometry automated
{Spec grav}
66746-9
Specimen type
50553-7
Color of Urine by Auto
30428-7
MCV [Entitic mean volume] in Red Blood Cells
fL
5767-9
Appearance of Urine
5778-6
Color of Urine
787-2
MCV [Entitic mean volume] in Red Blood Cells by Automated count
fL
61192-1
Color of Pleural fluid from Fetus
63433-7
Microscopic observation [Identifier] in Synovial fluid by Acid fast stain.Ziehl-Neelsen
640-3
Microscopic observation [Identifier] in Gastric fluid by Acid fast stain.Kinyoun
641-1
Microscopic observation [Identifier] in Gastric fluid by Acid fast stain.Kinyoun modified
642-9
Microscopic observation [Identifier] in Gastric fluid by Acid fast stain.Ziehl-Neelsen
643-7
Microscopic observation [Identifier] in Pus by Gram stain
6464-2
Microscopic observation [Identifier] in Cervix by Gram stain
6466-7
Microscopic observation [Identifier] in Duodenal fluid by Wet preparation
6467-5
Microscopic observation [Identifier] in Genital fluid by Gram stain
6468-3
Microscopic observation [Identifier] in Sputum by Calcofluor white
647-8
Microscopic observation [Identifier] in Sputum by Acid fast stain.Ziehl-Neelsen
6472-5
Microscopic observation [Identifier] in Tissue by Calcofluor white
650-2
Microscopic observation [Identifier] in Urine by Acid fast stain.Kinyoun
651-0
Microscopic observation [Identifier] in Urine by Acid fast stain.Kinyoun modified
652-8
Microscopic observation [Identifier] in Urine by Acid fast stain.Ziehl-Neelsen
659-3
Microscopic observation [Identifier] in Specimen by Carbol-fuchsin stain
660-1
Microscopic observation [Identifier] in Specimen by Dark field examination
6607-6
Microscopic observation [Identifier] in Tissue by Dark field examination
661-9
Microscopic observation [Identifier] in Specimen by Dry mount
663-5
Microscopic observation [Identifier] in Specimen by Gimenez stain
665-0
Microscopic observation [Identifier] in Specimen by Hematoxylin and eosin stain
6655-5
Microscopic observation [Identifier] in Tissue by Acid fast stain.Kinyoun
6657-1
Microscopic observation [Identifier] in Tissue by Acid fast stain.Ziehl-Neelsen
6658-9
Microscopic observation [Identifier] in Tissue by Acridine orange stain
6659-7
Microscopic observation [Identifier] in Tissue by Carbol-fuchsin stain
6661-3
Microscopic observation [Identifier] in Tissue by Dry mount
6662-1
Microscopic observation [Identifier] in Tissue by Giemsa stain
6663-9
Microscopic observation [Identifier] in Tissue by Gimenez stain
6666-2
Microscopic observation [Identifier] in Tissue by India ink prep
6667-0
Microscopic observation [Identifier] in Tissue by KOH preparation
6668-8
Microscopic observation [Identifier] in Tissue by M'Fadyean stain
6669-6
Microscopic observation [Identifier] in Tissue by Macchiavello stain
6670-4
Microscopic observation [Identifier] in Tissue by Malaria smear
6671-2
Microscopic observation [Identifier] in Tissue by Methenamine silver nitrate stain
6672-0
Microscopic observation [Identifier] in Tissue by Methylene blue stain.Loeffler
6673-8
Microscopic observation [Identifier] in Tissue by Neisser stain
6675-3
Microscopic observation [Identifier] in Tissue by Periodic acid-Schiff stain
6677-9
Microscopic observation [Identifier] in Tissue by Rhodamine-auramine fluorochrome stain
6678-7
Microscopic observation [Identifier] in Tissue by Toluidine blue O stain
6679-5
Microscopic observation [Identifier] in Tissue by Warthin-Starry stain
668-4
Microscopic observation [Identifier] in Specimen by M'Fadyean stain
6680-3
Microscopic observation [Identifier] in Tissue by Wet preparation
6681-1
Microscopic observation [Identifier] in Tissue by Wright stain
6682-9
Microscopic observation [Identifier] in Tissue by Wright Giemsa stain
669-2
Microscopic observation [Identifier] in Specimen by Macchiavello stain
671-8
Microscopic observation [Identifier] in Specimen by Methylene blue stain.Loeffler
672-6
Microscopic observation [Identifier] in Specimen by Neisser stain
674-2
Microscopic observation [Identifier] in Specimen by Periodic acid-Schiff stain
677-5
Microscopic observation [Identifier] in Specimen by Toluidine blue O stain
679-1
Microscopic observation [Identifier] in Specimen by Warthin-Starry stain
682-5
Microscopic observation [Identifier] in Specimen by Wright Giemsa stain
68384-7
Specific gravity of Pericardial fluid by Refractometry
68436-5
Appearance of Vitreous fluid
68455-5
Appearance of Spun Vitreous fluid
68958-8
Microscopic observation [Identifier] in Urine by KOH preparation
68971-1
Color of Vitreous fluid
73694-2
Microscopic observation [Identifier] in Blood by KOH preparation
75222-0
Microscopic observation [Identifier] in Throat by Alberts stain
76082-7
Microscopic observation [Identifier] in Bronchoalveolar lavage by Methenamine silver nitrate stain
76083-5
Microscopic observation [Presence] in Bronchoalveolar lavage by Acid fast stain.Ziehl-Neelsen
77653-4
Microscopic observation [Identifier] in Anorectal Cyto stain.thin prep
80661-2
Color of Peritoneal dialysis fluid
81423-6
Microscopic observation [Identifier] in Bone marrow by Acetate esterase stain
81424-4
Microscopic observation [Identifier] in Bone marrow by Toluidine blue O stain
81425-1
Microscopic observation [Identifier] in Bone marrow by Oil red O stain
81426-9
Microscopic observation [Identifier] in Venous blood by Acetate esterase stain
81427-7
Microscopic observation [Identifier] in Venous blood by Oil red O stain
86242-5
Color of Nasal fluid
87243-2
Microscopic observation [Presence] in Specimen by Auramine fluorochrome stain
87728-2
Description of swab specimen Narrative
87965-0
Microscopic observation [Identifier] in Cerebral spinal fluid by Giemsa stain
87966-8
Microscopic observation [Identifier] in Bone marrow by Giemsa stain
87967-6
Microscopic observation [Identifier] in Bone marrow by Gram stain
87968-4
Microscopic observation [Identifier] in Body fluid by Giemsa stain
87969-2
Microscopic observation [Identifier] in Blood by Gram stain
87970-0
Microscopic observation [Identifier] in Amniotic fluid by Giemsa stain
87971-8
Microscopic observation [Identifier] in Amniotic fluid by Gram stain
87972-6
Microscopic observation [Identifier] in Sinus by Gram stain
87973-4
Microscopic observation [Identifier] in Semen by Gram stain
87974-2
Microscopic observation [Identifier] in Burn by Gram stain
87975-9
Microscopic observation [Identifier] in Isolate by Gram stain
87999-9
Microscopic observation [Identifier] in Contact lens by Gram stain
88000-5
Microscopic observation [Identifier] in Pleural fluid by Giemsa stain
101879-5
Osmolality of Arterial blood by calculated by sum of electrolytes
mosm/kg
88144-1
Microscopic observation [Identifier] in Peritoneal fluid by Acid fast stain
88145-8
Microscopic observation [Identifier] in Pericardial fluid by Acid fast stain
88146-6
Microscopic observation [Identifier] in Placenta by Gram stain
88147-4
Microscopic observation [Identifier] in Pericardial fluid by Gram stain
88148-2
Microscopic observation [Identifier] in Genital specimen by Acid fast stain
88149-0
Microscopic observation [Identifier] in Nasopharynx by Gram stain
88150-8
Microscopic observation [Identifier] in Ocular fluid by Giemsa stain
88151-6
Microscopic observation [Identifier] in Wound by Acid fast stain
88152-4
Microscopic observation [Identifier] in Cervix by Acid fast stain.Kinyoun
88153-2
Microscopic observation [Identifier] in Bone marrow by Acid fast stain
88154-0
Microscopic observation [Identifier] in Sinus by Acid fast stain
88155-7
Microscopic observation [Identifier] in Ocular fluid by Acid fast stain
88156-5
Microscopic observation [Identifier] in Amniotic fluid by Acid fast stain
88157-3
Microscopic observation [Identifier] in Semen by Acid fast stain
88158-1
Microscopic observation [Identifier] in Ocular fluid by Gram stain
88159-9
Microscopic observation [Identifier] in Aspirate by Acid fast stain
88170-6
Microscopic observation [Identifier] in Cornea or Conjunctiva by Gram stain
88171-4
Microscopic observation [Presence] in Cornea or Conjunctiva by Acid fast stain
88172-2
Microscopic observation [Presence] in Isolate by Acid fast stain
88173-0
Microscopic observation [Presence] in Pleural fluid by Acid fast stain
88231-6
Microscopic observation [Identifier] in Bile fluid by Acid fast stain
88234-0
Microscopic observation [Presence] in Synovial fluid by Acid fast stain
88235-7
Microscopic observation [Identifier] in Synovial fluid by Giemsa stain
88336-3
Microscopic observation [Interpretation] of Ear specimen Narrative
88366-0
Microscopic observation [Presence] in Vomitus by Acid fast stain
88631-7
Microscopic observation [Presence] in Lower respiratory specimen by Acid fast stain.Kinyoun
88632-5
Microscopic observation [Identifier] in Lower respiratory specimen by Gram stain
88633-3
Microscopic observation [Identifier] in Lower respiratory specimen by Giemsa stain
88634-1
Microscopic observation [Identifier] in Saliva (oral fluid) by Gram stain
88635-8
Microscopic observation [Identifier] in Vomitus by Gram stain
88684-6
Microscopic observation [Identifier] in Aspirate by Giemsa stain
88685-3
Microscopic observation [Identifier] in Lower respiratory specimen by KOH preparation
89582-1
Microscopic observation [Identifier] in Cervix by Acid fast stain
89657-1
Microscopic observation [Identifier] in Lower respiratory specimen by Toluidine blue O stain
89658-9
Microscopic observation [Identifier] in Lower respiratory specimen by Methenamine silver nitrate stain
89659-7
Microscopic observation [Identifier] in Implanted device by Gram stain
89660-5
Microscopic observation [Identifier] in Implanted device by Acid fast stain
89661-3
Microscopic observation [Identifier] in Upper respiratory specimen by Acid fast stain
89662-1
Microscopic observation [Identifier] in Lower respiratory specimen by Acid fast stain
90261-9
Microscopic observation [Identifier] in Bile fluid by Giemsa stain
90262-7
Microscopic observation [Identifier] in Bile fluid by Gram stain
90263-5
Microscopic observation [Identifier] in Milk by Gram stain
90267-6
Microscopic observation [Identifier] in Pericardial fluid by Giemsa stain
90268-4
Microscopic observation [Identifier] in Peritoneal fluid by Giemsa stain
90269-2
Microscopic observation [Identifier] in Milk by Acid fast stain
90282-5
Microscopic observation [Identifier] in Catheter tip by Gram stain
90296-5
Microscopic observation [Identifier] in Skin by Gram stain
91808-6
Microscopic observation [Identifier] in Upper respiratory specimen by Gram stain
91850-8
Microscopic observation [Identifier] in Genital specimen by Giemsa stain
94543-6
Microscopic observation [Identifier] in Skin by Acid fast stain
94843-0
Osmolality of Urine from Fetus
mosm/kg
96035-1
Microscopic observation [Identifier] in Tissue by Alcian blue stain.with hyaluronidase
96713-3
Microscopic observation [Identifier] in Body fluid by Light microscopy
96715-8
Color of Prostatic fluid
88001-3
Microscopic observation [Identifier] in Peritoneal dialysis fluid by Gram stain
101880-3
Osmolality of Venous blood by calculated by sum of electrolytes
mosm/kg
103655-7
Color of Spun Pleural fluid
103656-5
Color of Spun Peritoneal fluid
103657-3
Color of Spun Pericardial fluid
104490-8
Appearance in Blood product unit
104866-9
Microscopic observation [Identifier] in Cervix by Cyto stain.thin prep.computer assisted
105059-0
Microscopic observation [Identifier] in Specimen
10688-0
Microscopic observation [Identifier] in Hair by KOH preparation
107589-4
Microscopic observation [Identifier] in Synovial fluid by Acid fast stain.Kinyoun modified
107590-2
Microscopic observation [Identifier] in Drain by Acid fast stain.Kinyoun modified
107591-0
Microscopic observation [Identifier] in Peritoneal fluid by Acid fast stain.Kinyoun modified
107592-8
Microscopic observation [Identifier] in Pericardial fluid by Acid fast stain.Kinyoun modified
107593-6
Microscopic observation [Identifier] in Bronchoalveolar lavage by Acid fast stain.Kinyoun modified
107598-5
Microscopic observation [Identifier] in Cerebral spinal fluid by Acid fast stain.Kinyoun modified
107599-3
Microscopic observation [Identifier] in Body fluid by Acid fast stain.Kinyoun modified
107600-9
Microscopic observation [Identifier] in Pus by Acid fast stain.Kinyoun modified
107601-7
Microscopic observation [Identifier] in Lymph node by Acid fast stain.Kinyoun modified
107602-5
Microscopic observation [Identifier] in Aspirate by Acid fast stain.Kinyoun modified
10763-1
Microscopic observation [Identifier] in Body fluid by Sudan black stain
10764-9
Microscopic observation [Identifier] in Sputum by Silver stain
10765-6
Microscopic observation [Identifier] in Tissue by Acetate esterase stain
10766-4
Microscopic observation [Identifier] in Tissue by Alcian blue stain
10767-2
Microscopic observation [Identifier] in Tissue by Alcian blue stain.sulfated
10768-0
Microscopic observation [Identifier] in Tissue by Alcian blue stain.with periodic acid-Schiff
10769-8
Microscopic observation [Identifier] in Tissue by Alizarin red S stain
10770-6
Microscopic observation [Identifier] in Tissue by Argentaffin stain
10772-2
Microscopic observation [Identifier] in Tissue by Azure-eosin stain
10773-0
Microscopic observation [Identifier] in Tissue by Basic fuchsin stain
10774-8
Microscopic observation [Identifier] in Tissue by Bielschowsky stain
10775-5
Microscopic observation [Identifier] in Tissue by Bleach stain
10776-3
Microscopic observation [Identifier] in Tissue by Bodian stain
10777-1
Microscopic observation [Identifier] in Tissue by Brown and Brenn stain
10779-7
Microscopic observation [Identifier] in Tissue by Carmine stain.Best
10780-5
Microscopic observation [Identifier] in Tissue by Chloracetate esterase stain
10781-3
Microscopic observation [Identifier] in Tissue by Churukian-Schenk stain
10783-9
Microscopic observation [Identifier] in Tissue by Crystal violet stain
10784-7
Microscopic observation [Identifier] in Tissue by Esterase stain.non-specific
10785-4
Microscopic observation [Identifier] in Tissue by Fite-Faraco stain
10787-0
Microscopic observation [Identifier] in Tissue by Gridley stain
10788-8
Microscopic observation [Identifier] in Tissue by Hansel stain
10790-4
Microscopic observation [Identifier] in Tissue by Hematoxylin-eosin-Mayers progressive stain
10791-2
Microscopic observation [Identifier] in Tissue by Mallory-Heidenhain stain
10792-0
Microscopic observation [Identifier] in Tissue by Methenamine silver stain.Jones
10793-8
Microscopic observation [Identifier] in Tissue by Methyl green stain
10794-6
Microscopic observation [Identifier] in Tissue by Methyl green-pyronine Y stain
10795-3
Microscopic observation [Identifier] in Tissue by Methyl violet stain
10796-1
Microscopic observation [Identifier] in Tissue by Mucicarmine stain
10797-9
Microscopic observation [Identifier] in Tissue by Neutral red stain
10798-7
Microscopic observation [Identifier] in Tissue by Oil red O stain
10799-5
Microscopic observation [Identifier] in Tissue by Pentachrome stain.Movat
10800-1
Microscopic observation [Identifier] in Tissue by Periodic acid-Schiff stain with diastase digestion
10801-9
Microscopic observation [Identifier] in Tissue by Phosphotungstic acid Hematoxylin (PTAH) Stain
10802-7
Microscopic observation [Identifier] in Tissue by Prussian blue stain
10803-5
Microscopic observation [Identifier] in Tissue by Quinacrine fluorescent stain
10804-3
Microscopic observation [Identifier] in Tissue by Reticulin stain
10805-0
Microscopic observation [Identifier] in Tissue by Safranin stain
10806-8
Microscopic observation [Identifier] in Tissue by Schmorl stain
10807-6
Microscopic observation [Identifier] in Tissue by Sevier-Munger stain
10808-4
Microscopic observation [Identifier] in Tissue by Silver impregnation stain.Dieterle
10809-2
Microscopic observation [Identifier] in Tissue by Silver stain
10810-0
Microscopic observation [Identifier] in Tissue by Fontana-Masson stain
10811-8
Microscopic observation [Identifier] in Tissue by Silver stain.Grimelius
10812-6
Microscopic observation [Identifier] in Tissue by Steiner stain
10813-4
Microscopic observation [Identifier] in Tissue by Sudan black stain
10814-2
Microscopic observation [Identifier] in Tissue by Supravital stain
10815-9
Microscopic observation [Identifier] in Tissue by Tetrachrome stain
10818-3
Microscopic observation [Identifier] in Tissue by Trichrome stain.Masson modified
10819-1
Microscopic observation [Identifier] in Tissue by Wade stain
10856-3
Microscopic observation [Identifier] in Genital mucus by Gram stain
11016-3
Microscopic observation [Identifier] in Blood or Marrow by Esterase stain.non-specific
11017-1
Microscopic observation [Identifier] in Blood or Marrow by Chloracetate esterase stain
11019-7
Microscopic observation [Identifier] in Blood or Marrow by Sudan black B stain
11069-2
Microscopic observation [Identifier] in Gastric fluid by Cyto stain
11272-2
MCV [Entitic mean volume] in Cord blood by Automated count
fL
11476-9
Microscopic observation [Identifier] in Gastric fluid by Acid fast stain
13510-3
Microscopic observation [Identifier] in Bone marrow by Myeloperoxidase stain
13512-9
Microscopic observation [Identifier] in Bone marrow by Butyrate esterase stain
14345-3
Specific gravity of Amniotic fluid by Refractometry
14346-1
Specific gravity of Cerebral spinal fluid by Refractometry
14347-9
Specific gravity of Gastric fluid by Refractometry
14351-1
Specific gravity of Stool by Refractometry
14352-9
Specific gravity of Water by Refractometry
14353-7
Microscopic observation [Identifier] in Pleural fluid by Acid fast stain.Kinyoun modified
14354-5
Microscopic observation [Identifier] in Wound by Acid fast stain.Kinyoun modified
14355-2
Microscopic observation [Identifier] in Cervix by KOH preparation
14359-4
Microscopic observation [Identifier] in Peritoneal fluid by Gram stain
14360-2
Microscopic observation [Identifier] in Pleural fluid by Gram stain
14841-1
Microscopic observation [Identifier] in Specimen by Iron hematoxylin stain
14842-9
Microscopic observation [Identifier] in Specimen by Kinyoun iron hematoxylin stain
17281-7
Microscopic observation [Identifier] in Sputum by KOH preparation
17794-9
Osmolality of Hyperal solution
mosm/kg
18327-7
Microscopic observation [Identifier] in Duodenal fluid by Other stain
18501-7
Microscopic observation [Identifier] in Buccal smear by Cyto stain
18502-5
Microscopic observation [Identifier] in Deep tissue fine needle aspirate by Cyto stain
18503-3
Microscopic observation [Identifier] in Superficial tissue fine needle aspirate by Cyto stain
20881-9
Microscopic observation [Identifier] in Tissue by Electron microscopy thin sectiion
20882-7
Microscopic observation [Identifier] in Stool by Electron microscopy negative stain
20883-5
Microscopic observation [Identifier] in Urine by Dark field examination
20884-3
Microscopic observation [Identifier] in Stool by Dark field examination
20885-0
Microscopic observation [Identifier] in Gastric fluid by Dark field examination
21021-1
Microscopic observation [Identifier] in Bronchial specimen by Gram stain
21022-9
Microscopic observation [Identifier] in Dialysis fluid by Gram stain
21391-8
Microscopic observation [Identifier] in Bone by Acid phosphatase stain
23901-2
Microscopic observation [Identifier] in Body fluid by Wet preparation
2690-6
Osmolality of Pleural fluid
mosm/kg
2691-4
Osmolality of Peritoneal fluid
mosm/kg
31187-8
Microscopic observation [Identifier] in Lymph node fine needle aspirate by Cyto stain
31188-6
Microscopic observation [Identifier] in Kidney fine needle aspirate by Cyto stain
31190-2
Microscopic observation [Identifier] in Salivary gland fine needle aspirate by Cyto stain
31191-0
Microscopic observation [Identifier] in Prostate fine needle aspirate by Cyto stain
31192-8
Microscopic observation [Identifier] in Liver fine needle aspirate by Cyto stain
31193-6
Microscopic observation [Identifier] in Pancreas fine needle aspirate by Cyto stain
31194-4
Microscopic observation [Identifier] in Submandibular fine needle aspirate by Cyto stain
31195-1
Microscopic observation [Identifier] in Soft tissue fine needle aspirate by Cyto stain
31196-9
Microscopic observation [Identifier] in Abdomen fine needle aspirate by Cyto stain
31197-7
Microscopic observation [Identifier] in Pelvis fine needle aspirate by Cyto stain
31198-5
Microscopic observation [Identifier] in Parotid fine needle aspirate by Cyto stain
31199-3
Microscopic observation [Identifier] in Lung fine needle aspirate by Cyto stain
32186-9
Microscopic observation [Identifier] in Penis by Tzanck smear
32187-7
Microscopic observation [Identifier] in Skin by Tzanck smear
32798-1
Microscopic observation [Identifier] in Specimen by Oil red O stain
32814-6
Microscopic observation [Identifier] in Specimen by Chloracetate esterase stain
32815-3
Microscopic observation [Identifier] in Specimen by Sudan black B stain
32818-7
Microscopic observation [Identifier] in Specimen by Acetate esterase stain
33675-0
Microscopic observation [Identifier] in Specimen by Esterase stain.combined
33699-0
Microscopic observation [Identifier] in Specimen by Malachite green stain
34166-9
Microscopic observation [Identifier] in Specimen by Electron microscopy
34959-7
Microscopic observation [Identifier] in Blood by Myeloperoxidase stain
35737-6
Microscopic observation [Identifier] in Amniotic fluid by Nile blue prusside
38519-5
Microscopic observation [Identifier] in Blood or Marrow by Prussian blue stain
39086-4
Microscopic observation [Identifier] in Vaginal fluid by Cyto stain.thin prep
40606-6
Appearance of Peritoneal dialysis fluid
41280-9
Appearance of Spun Synovial fluid
42209-7
Microscopic observation [Identifier] in Cerebral spinal fluid by Cyto stain
43417-5
Microscopic observation [Identifier] in Esophageal brushing by Cyto stain
43427-4
Microscopic observation [Identifier] in Tissue by Rapid stain
44098-2
Microscopic observation [Identifier] in Specimen by Wayson stain
48722-3
Microscopic observation [Identifier] in Body fluid by Crystal violet stain
49001-1
Osmolality of Sweat
mosm/kg
50389-6
Microscopic observation [Identifier] in Bronchial brush by Cyto stain.thin prep
50668-3
Microscopic observation in Specimen by Electron microscopy Narrative
51617-9
Color of Dialysis fluid
51700-3
Microscopic observation [Identifier] in Specimen by Lactophenol blue
52812-5
Appearance of Spun Dialysis fluid
52813-3
Appearance of Spun Pleural fluid
52814-1
Appearance of Spun Peritoneal fluid
52820-8
Appearance of Spun Pericardial fluid
53522-9
Microscopic observation [Identifier] in Bronchial specimen by Rhodamine-auramine fluorochrome stain
53555-9
Specific gravity of Red Blood Cells
53904-9
Microscopic observation [Identifier] in Sputum by Rhodamine-auramine fluorochrome stain
53905-6
Microscopic observation [Identifier] in Urine by Rhodamine-auramine fluorochrome stain
53906-4
Microscopic observation [Identifier] in Cerebral spinal fluid by Rhodamine-auramine fluorochrome stain
53907-2
Microscopic observation [Identifier] in Pleural fluid by Rhodamine-auramine fluorochrome stain
53910-6
Microscopic observation [Identifier] in Peritoneal fluid by Rhodamine-auramine fluorochrome stain
53912-2
Microscopic observation [Identifier] in Body fluid by Rhodamine-auramine fluorochrome stain
53913-0
Microscopic observation [Identifier] in Synovial fluid by Rhodamine-auramine fluorochrome stain
53914-8
Microscopic observation [Identifier] in Endometrium by Rhodamine-auramine fluorochrome stain
53915-5
Microscopic observation [Identifier] in Pericardial fluid by Rhodamine-auramine fluorochrome stain
53916-3
Microscopic observation [Identifier] in Gastric fluid by Rhodamine-auramine fluorochrome stain
53918-9
Microscopic observation [Identifier] in Bone marrow by Rhodamine-auramine fluorochrome stain
55222-4
Microscopic observation [Identifier] in Aspirate by Rhodamine-auramine fluorochrome stain
55600-1
Microscopic observation [Identifier] in Peritoneal fluid by Cyto stain
55601-9
Microscopic observation [Identifier] in Pericardial fluid by Cyto stain
55602-7
Microscopic observation [Identifier] in Pleural fluid by Cyto stain
55603-5
Microscopic observation [Identifier] in Synovial fluid by Cyto stain
55604-3
Microscopic observation [Identifier] in Endometrium by Cyto stain
55960-9
Osmolality of Dialysis fluid
mosm/L
57372-5
Osmolality of 12 hour Urine
mosm/kg
57835-1
Appearance of Dialysis fluid
57851-8
Microscopic observation [Identifier] in Urethra by Wet preparation
58942-4
Microscopic observation [Identifier] in Pleural fluid by Acid fast stain.Ziehl-Neelsen
58943-2
Microscopic observation [Identifier] in Cerebral spinal fluid by Acid fast stain.Ziehl-Neelsen
58944-0
Microscopic observation [Identifier] in Body fluid by Acid fast stain.Ziehl-Neelsen
58945-7
Microscopic observation [Identifier] in Peritoneal fluid by Acid fast stain.Ziehl-Neelsen
59474-7
Microscopic observation [Identifier] in Cerebral spinal fluid by Acridine orange stain
60027-0
Specific gravity of Pericardial fluid

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