Beta2-Microglobulin
ß2-microglobulin is a protein produced essentially by T lymphocytes and released into the extracellular environment. The measurement of b2-microglobulin in urine is used in the evaluation of the condition of the kidney and in blood for the determination of lymphocyte activity in AIDS and lymphoproliferative disorders, as well as the evaluation of the patient's response to tumour invasion.