Beta-2-Microglobulin

A beta-2 microglobulin tumor marker test measures the amount of a protein called beta-2 microglobulin (B2M) in your body fluids. The test usually uses a sample of your blood. It may also be done using urine (pee) or in rare cases cerebrospinal fluid (CSF).

Though a beta-2 microglobulin tumor marker test cannot be used to screen for or diagnose cancer, it can provide valuable information about any bone marrow or blood cancer you already have.

Source: MedlinePlus, U.S. National Library of Medicine

Normal range

3 published ranges, each from a named source

0.52.8 mg/L drawn: all ages · American Board of Internal Medicine (Laboratory Test Reference Ranges)

Normal: 0.54–2.75 mg/L

Ranges from ARUP Laboratories Test Directory, American Board of Internal Medicine (Laboratory Test Reference Ranges).

All source ranges (3)

Source	Sex	Age	Range
American Board of Internal Medicine (Laboratory Test Reference Ranges)	All	all ages	0.54–2.75 mg/L
ARUP Laboratories Test Directory	All	≤ 60 y	0.8–2.4 mg/L
ARUP Laboratories Test Directory	All	60 y+	<3 mg/L

What an abnormal result can be associated with

A high result: Elevated circulating beta-2-microglobulin concentration
A low result: Decreased circulating beta-2-microglobulin concentration

Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis: only a clinician can interpret your result in context.

details

Sample: Serum or plasma · LOINC
Listed under: Leukemia · Lymphoma · Multiple Myeloma
Code: LOINC 1952-1 · mg/L
Also known as: B2 Microglob, b2-M, Microglob

See your own Beta-2-Microglobulin Add a lab report and it is drawn against your lab's range, over time. Upload a Blood Test