The article deals with the results of HLA-typing of 2829 patients on loci HLA-A, HLA-B, HLA-DRB1 using kits of LABType SSO reagents (One Lambada, USA). The indicators of each locus ambiguity are determined: locus HLA-A 4.43%, locus HLA-B 4.43°%, locus HLA-DRB1 0.26%. The list of rare alleles was applied to analyze 23 types of determined ambiguities on locus HLA-A, 27 types on locus HLA-B, 3 types on locus HLA-DRB1.