[Problems and dilemmas in the testing of genetic characteristics of the blood for the purpose of determining disputed paternity (forensic hemogenetics)].

The work presents certain groups of cases selected from more than 1500 triplets (father-mother-child) we tested from 1979. to 1984., in order to indicate certain dilemmas in making definite conclusions on disputed paternity. 55 cases of the first rule exclusions, using one system only were found to be definite; one conclusion on disputed paternity exclusion using Duffy system only was found to be correctly finished, although we should not recommend it; extention of the analysis set with HLA-A, B, C products determination significantly increases exclusion percentage of misjudged fathers; in the analyzed group of 22 exclusions where HLA antigens were determined, during the second stage or simultaneously with the determination of erythrocytes, we found 7 exclusions according to erythrocyte system, also confirmed according to HLA; 12 cases with exclusions according to HLA only, 3 cases with no exclusions either according to erythrocyte system or HLA; according to Duffy system we had two cases of apparent maternity exclusions.