Male Lineage Y-Chromosome DNA Test

Compare male DNA through the paternal line.

My Dad has Passed. How do I Know if He Really was my Biological Father?

Our Y-Chromosome DNA test identifies direct male lineage. This paternal-relative (Y-STR) comparison test—also known as a paternal lineage test—can confirm a relationship to a relative on the direct-male line. This test is also used to provide additional evidence in difficult paternity situations in which a possible father is not available for testing—indirectly, it can tell you whether or not a child is related to the possible father’s brother(s) and other male relatives who share a common paternal line. The report is posted to your secure online account 5 business days after all samples have been received at the lab. There are many relationship questions that can be answerered by Y-Chromosome DNA testing. Contact our experts today for a free consultation to see if this test is right for your unique situation.

The DDC Promise

Results in 5 Business Days

Once all samples arrive at the lab.

PhD-Reviewed Results

Our in-house team ensures accuracy.

Team Support

We keep you informed every step of the way.

Because only males have the Y chromosome, this analysis cannot be performed for females. Contact us for other testing options.

Reasons to get a Male Lineage Y-Chromosome DNA Test

  • To confirm the truth about a biological relationship with a male relative or ancestor along your direct male line
  • To help confirm paternity between a male child and a possible father
  • Medical history

Results are completely confidential, and your private genetic information is never shared with or sold to outside parties. See our privacy policy here.

How a Male Lineage DNA Test Works

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. Although the Y chromosome is only found in males, women can also indirectly participate in a Y-Chromosome DNA test if they are interested in determining their paternal relatives. They would need to ask a close biological male relative—father, brother, paternal uncle, or paternal grandfather—to contribute a sample for comparison testing with her potential paternal relative or ancestor.

In a Y-Chromosome DNA test, specific locations on the Y chromosome are examined to generate a Y-STR profile for each male tested. Males who are related through their fathers will tend to have the same or similar Y-STR profiles, and males who are not related will likely have different Y-STR profiles.

To order a Y-Chromosome DNA Test, call 1.800.681.7162