Beta-2 Microglobulin
Also known as: B2M; B2M; β2-Microglobulin; Thymotaxin
Formal name: Beta2 Microglobulin, Serum, Urine, or CSF
At a Glance
Why Get Tested?
To help evaluate the severity and prognosis of multiple myeloma, leukemia, or lymphoma; to distinguish between kidney disorders and to detect kidney damage
When to Get Tested?
When you have been diagnosed with multiple myeloma or certain other cancers; sometimes to monitor treatment; when you have signs associated with kidney dysfunction
Sample Required?
A blood sample drawn from a vein in your arm; sometimes a 24-hour urine sample; rarely a cerebrospinal fluid (CSF) sample
Test Preparation Needed?
None
