Objective: To evaluate the PCR-SSO technique for identification HLA in Cho Ray hospital. Material: Kidney transplant donor and patient in Cho Ray hospital. Method: PCR-SSO (Polymerase Chain Reaction - Sequence - specific Oligonucleotide Probes). Results: Collected are that 77 phenotyping of HLA - A, 73 phenotyping of HLA - B, 77 phenotyping of HLA - DRB1, 79 phenotyping of HLA - DQA1 and 79 phenotyping of HLA - DQB1 among 42 persons.