IgG

ChemistryAlso known as: Immunoglobulin gmg/dL

Measures IgG antibody levels in body fluids to assess immune response in specific tissues.

Normal Range
700 – 1600 mg/dL
mg/dL
Abnormal Levels
Consult your provider
Specimen Type
Blood

Why This Biomarker Matters

IgG in body fluids indicates infection, inflammation, or immune dysfunction in specific areas. Elevated levels help diagnose conditions like meningitis, peritonitis, and autoimmune diseases.

Understanding Your Results

Normal Range

700 – 1600 mg/dL

Overview

IgG is an antibody protein produced by the immune system to fight infections and provide long-term immunity. When measured in body fluids like serum or plasma, peritoneal fluid, or pleural fluid, IgG levels help evaluate immune response and identify infections or inflammatory conditions in specific body compartments. Elevated IgG in these fluids may indicate chronic infection, autoimmune disease, or immune system dysfunction.

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

77177-4Primary
IgG [Moles/volume] in Serum or Plasma
umol/L
2464-6
IgG [Mass/volume] in Cerebral spinal fluid
mg/dL
2465-3
IgG [Mass/volume] in Serum or Plasma
mg/dL
15183-7
IgG [Mass/volume] in Body fluid
mg/dL
33415-1
IgG [Mass/volume] in Urine
mg/dL
6780-1
IgG [Mass/volume] in Urine by Electrophoresis
g/L
18302-0
IgG [Presence] in Urine by Immunofixation
18301-2
IgG [Presence] in Serum by Immunofixation
15184-5
IgG [Presence] in Serum by Immunoelectrophoresis
47083-1
IgG [Mass/volume] in 24 hour Urine
mg/dL
6781-9
IgG [Mass/volume] in Urine by Immunoassay
mg/dL
17007-6
IgG [Presence] in Serum
38488-3
IgG [Units/volume] in Serum
[arb'U]/mL
44595-7
IgG [Presence] in 24 hour Urine by Immunofixation
21350-4
IgG [Presence] in Cerebral spinal fluid by Immunofixation
25445-8
IgG [Presence] in Urine by Immunoelectrophoresis
30141-6
IgG [Presence] in 24 hour Urine by Immunoelectrophoresis
106811-3
IgG [Mass/volume] in Cord blood by Immunoassay
g/L
54901-4
IgG [Mass/volume] in Peritoneal fluid
g/L
55922-9
IgG [Mass/volume] in Serum by Electrophoresis
g/L
55923-7
IgG [Mass/time] in 24 hour Urine
mg/(24.h)
55974-0
IgG [Mass/volume] in Serum by Immune diffusion (ID)
g/L
55975-7
IgG [Mass/volume] in Body fluid by Immune diffusion (ID)
g/L
56122-5
IgG [Mass/volume] in Cord blood
mg/dL
76489-4
IgG [Moles/volume] in Cerebral spinal fluid
umol/L
76490-2
IgG [Moles/volume] in Urine
umol/L

Available Lab Tests

Order tests that measure this biomarker

IgG Test

$24.54