Similar to a paternity test, even if the possible father is dead, one can check whether two or more siblings had the same father. More information and with it a higher probability of descendancy are obtained when the mother or relatives of the father are involved in the sibling test.

Should the information produced through a DNA test not be sufficient to formulate a clear result, DNA fingerprints from further people from the known line of descent must be obtained. Through corresponding calculations (simulation), we can investigate with what probability a relationship can be determined before the beginning of the DNA test.

The more information available (amount of sample people and DNA markers), the more meaningful the research result. Depending on the case, we can test inheritance characteristics up to 24 DNA markers.
 
Should the parents not be available for a test, siblings of the parents or the grandparents can be tested in order to answer descendancy questions.

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Results usually will be delivered 8 - 10 days after we received the samples and the payment.