[Ahaptoglobinemia (hypohaptoglobinemia), its incidence, etiology and significance in paternity serology].

Frequency of ahaptoglobinaemia (ahp) in adult population (on the base of investigation of 4000 cases) was found 0.225 per cent, in children (on the base of investigation of 119 children younger than 2 years) 0.94 per cent. Frequency of ahp among children younger 4 months 44 per cent. These observations support the hypothesis, on the role of a mutagen allel (Hp2m) in the origin of the ahp. If in cases of discussed paternity in the child ahp was revealed and the Hp constellation of the mother: putative father was: Hp 1--1 X 1--1 or 2--2 X 2--2--provided that the paternity with the testing of other blood-group systems could not be excluded--it's necessary to try to identify the true Hp type of the child--since it might give the possibility for exclusion of paternity.