[Significance and testimonial value of hemo-genetic legal identification with special reference to DNA analysis].

175 hemogenetic expertises on the identity of ostensibly jumbled blood samples were analysed. In 4.5% of the cases a genetically qualified non-identity was found, although an erronous mixing-up of samples could be excluded. A major problem may arise when the expert witness has to find out whether a non-identity is due to either genetic or to artificial reasons. A battery of conventional blood group systems as well as highly informative DNA polymorphisms is a powerful tool in discriminating between both reasons and enables the expert to reach a decision.