Beta-2-Microglobulin, Urine analysis is a test designed to measure the level of beta-2-microglobulin protein in a urine sample. This analysis is used to assess kidney function, as elevated protein levels are associated with problems in kidney filtration. It is also considered an indicator of certain conditions, such as kidney infections, some immune disorders, and cancers. The results can help in diagnosing health conditions and monitoring disease progression or treatment effectiveness.