Beta-2 Microglobulin Kidney Disease

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Also known as: B2M; B2M; β2-Microglobulin; Thymotaxin
Formal name: Beta2 Microglobulin, Serum or Urine

Were you looking for Beta-2 Microglobulin Tumour Marker, requested to detect and monitor certain blood cell cancers?

At a Glance

Why Get Tested?

Beta-2 microglobulin (B2M) is not a frequently requested test in the UK, however it may be used to detect and localise kidney damage and follow kidney disorders.

When to Get Tested?

The test is rarely requested when investigating kidney disease due to poor specificity. However it may be requested when you have symptoms and signs associated with kidney dysfunction; due to possible cadmium kidney toxicity. However the main use of B2M in the UK is in multiple myeloma (see the Beta-2 Microglobulin Tumour Marker article) not in kidney disease.

Sample Required?

A blood sample drawn from a vein in your arm and/or a random or 24-hour urine sample.

Test Preparation Needed?