Beta 2 microglobulin is a tumour marker for:: (A) Multiple myeloma, (B) Lung cancer, (C) Colonic neoplasm, (D) Choriocarcinoma
Answer is A. Increased levels of microglobulin are seen in the urine and serum of patients with multiple myeloma. Serum beta 2 microglobulin is the single most powerful predictor of survival and can substitute for staging. (ref Harsh mohan 6th/383,Robbins 9th/)