Beta-2-Microglobulin

ChemistryAlso known as: B2 Microglob 24h Ur-mCncAlso known as: B2 Microglob 24h Ur-mRateAlso known as: B2 Microglob 24h Ur-sCncnmol/L

Detects beta-2-microglobulin protein in serum or plasma.

Normal Range
Consult your provider
nmol/L
Abnormal Levels
Consult your provider
Specimen Type
Blood

Why This Biomarker Matters

Elevated CSF beta-2-microglobulin suggests central nervous system infection, inflammation, or malignancy requiring urgent diagnosis and treatment.

Overview

Beta-2-microglobulin (B2M) is a small protein found on the surface of most nucleated cells and is a component of the MHC class I complex. This test measures B2M concentration in serum or plasma. Elevated serum levels are an important prognostic marker in multiple myeloma and other lymphoproliferative disorders. B2M also rises with renal impairment (since it is filtered by the kidneys), chronic inflammatory conditions, and certain viral infections including HIV. Serial measurements are used to monitor treatment response in hematologic malignancies.

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

1952-1Primary
Beta-2-Microglobulin [Mass/volume] in Serum or Plasma
mg/L;ug/mL
43919-0
Beta-2-Microglobulin [Presence] in Cerebral spinal fluid
10873-8
Beta-2-Microglobulin [Mass/time] in 24 hour Urine
mg/(24.h)
14626-6
Beta-2-Microglobulin [Moles/volume] in Serum
nmol/L
1951-3
Beta-2-Microglobulin [Mass/volume] in Cerebral spinal fluid
ug/mL
43818-4
Beta-2-Microglobulin [Presence] in Serum
1953-9
Beta-2-Microglobulin [Mass/volume] in Urine
ug/L;ng/mL
50824-2
Beta-2-Microglobulin [Moles/volume] in 24 hour Urine
nmol/L
54356-1
Beta-2-Microglobulin [Mass/volume] in 24 hour Urine
ug/L
56662-0
Beta-2-Microglobulin [Moles/time] in 24 hour Urine
nmol/(24.h)
59217-0
Beta-2-Microglobulin [Mass/volume] in Peritoneal fluid
mg/L
59218-8
Beta-2-Microglobulin [Mass/volume] in Pleural fluid
mg/L
76484-5
Beta-2-Microglobulin [Moles/volume] in Serum or Plasma
nmol/L
83076-0
Beta-2-Microglobulin [Units/volume] in Serum or Plasma by Immunoassay
k[IU]/L
83077-8
Beta-2-Microglobulin [Mass/volume] in Urine by Immunoassay
mg/L
83078-6
Beta-2-Microglobulin [Mass/volume] in Serum or Plasma by Immunoassay
mg/L
83079-4
Beta-2-Microglobulin [Units/volume] in Urine by Immunoassay
k[IU]/L
88711-7
Beta-2-Microglobulin [Mass/volume] in Peritoneal dialysis fluid
mg/L
32301-4
Beta-2-Microglobulin [Moles/volume] in Cerebral spinal fluid
nmol/L
32302-2
Beta-2-Microglobulin [Moles/volume] in Urine
nmol/L
39458-5
Beta-2-Microglobulin [Moles/volume] in Body fluid
nmol/L
43819-2
Beta-2-Microglobulin [Presence] in Urine
48166-3
Beta-2-Microglobulin [Mass/volume] in Body fluid
g/dL
49081-3
Beta-2-Microglobulin [Mass/volume] in Dialysis fluid
ng/mL

Available Lab Tests

Order tests that measure this biomarker

Beta 2 Microglobulin Serum Test

$53.85