BICARBONATE

The beta-2 microglobulin (B2M) test measures the level of B2M, a protein found on the surface of most cells, in the blood, urine, or cerebrospinal fluid. Elevated B2M levels can indicate certain cancers, such as multiple myeloma and lymphoma, as well as kidney disease and viral infections. This test is used to assess disease prognosis, monitor treatment response, and evaluate kidney function. High B2M levels are associated with a poor prognosis in certain cancers, making this test valuable for guiding treatment decisions and monitoring disease progression.