what is hla testing
Definition. The human leukocyte antigen (HLA) test, also known as HLA typing or tissue typing, identifies antigens on the white blood cells (WBCs) that determine tissue compatibility for organ transplantation (that is, histocompatibility testing).uman leukocyte antigen testing is performed to reduce the probability of both rejection and GVHD. Typing is also used along with blood typing and DNA tests to determine the parentage (that is, for paternity testing).