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 the alleged father is not available for testing—indirectly, it can tell you whether or not a child is related to the alleged 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