Paternal Lineage (Y-STR) DNA Test

All testing performed by an accredited laboratory. DNA Direct offers confidential, accurate, fast, and affordable Y-STR testing services. Y-STR testing determines whether two males share the same paternal lineage. The Y-STR comparison DNA test is based on the fact that the Y chromosome is passed from father to son relatively unchanged through many generations. Only males can undergo Y-STR testing because females do not possess a Y chromosome. Y-STR testing will tell you whether or not your Y-STRs are consistent, or not consistent, with the conclusion that you and the possible relative(s) may be related through a common male ancestor. Y-STR analysis cannot distinguish a specific relationship between males who belong to the same paternal line. However, it is useful for excluding males from an alleged biological relationship. For example, if a male child and his alleged uncle (alleged father’s full brother) are tested, their Y-STR profiles must match. If they do not, then the alleged uncl