We can test hair samples. The only criterium we have is that you need to ensure that the hairs you send in have the roots. If they do have the roots then we are able to extract nuclear DNA from the sample and use it for paternity testing or any other DNA test. If the hairs do not have the roots, we can only off the mtDNA test.This latter test iideal when test individuals wants to confirm whether or not they have the same paternal line.