Paternal Lineage DNA Test

Paternal Lineage (Y-STR) DNA Testing

Paternal Lineage (Y-STR) DNA Testing

Tracing your paternal lineage

Wanting to confirm a relationship with a possible male relative? The Y-STR Paternal Lineage DNA Test can show if there is a relation between two males.

The Paternal Lineage test only works on biological males. Due to the Y chromosome being hereditary and passed down from father to son relatively unchanged over time (females do not have a Y chromosome). This test is limiting in that it cannot pinpoint the exact relationship between the two males that share a common paternal ancestor. It only determines whether two males share the same paternal Y-STR marker. However, the test is helpful in excluding certain males from an alleged biological relationship.

If you are trying to prove the specific paternal relationship of an alleged father and son, please see our Paternity DNA Testing page.

How is a Paternal Lineage DNA (Y-STR) Test done?

When you order the easy at-home Y-STR Paternal Lineage DNA test kit from Validity Genetics we will be delivered to you by First Class USPS Mail (UPS Next Business Day available*). Our kit will contain oral (buccal) swabs for each person that will be participating in the testing. The DNA samples can be collected at home by rubbing the oral swab on the inside of the cheek. When you are done, mail it back to our AABB accredited lab in the enclosed prepaid envelope for processing .

Your results will be finished and sent to you within 2 days after receipt at our lab.

In the Las Cruces, NM/El Paso, TX area?
Schedule an appointment at our El Paso laboratory near N. Mesa and Restler

How to Order Your Paternal Lineage Test

Order your DNA test like you would any other product online.  Fill in your name, email, shipping address, and purchase with PayPal or a credit card of your choice.  Your DNA paternity test kit will be mailed to you in a traceable nondescript package to ensure your privacy.

  • Step 2: Collect DNA at Home

Collecting a DNA sample with a simple cheek (buccal) swab is so easy. The easy-to-use kit will contain everything you need and the enclosed directions will walk you through the quick and simple DNA collection process.  When you have completed the instructions just use the prepaid envelope included in your kit to return your DNA sample to our laboratory.

  • Step 3: Receive DNA Results via Email

When we receive your samples we go the extra mile to ensure your results are as accurate as scientifically possible (99.99% accuracy, the highest you can get!). When we have completed the examination we will notify you by email with the results from your test within two business days.

Paternal Lineage DNA Testing: Frequently Asked Questions

+ One of the People to be tested lives in a different city or state, can I have a test sent to them?

  • Yes! If the participants live at different addresses, different cities, or even in different states, we can send separate kits to everyone involved.

    In order to send a second kit to another address simply add the Additional Kit/Split Kit add-on to your cart and enter the secondary address in the pop-up fields provided (your address will be entered upon checkout).

+ I am not sure what DNA test is for me, can you help me decide?

  • Of course! Our team of DNA professionals are here to listen to your needs and help you decide on what is best for you. We have multiple ways for you to get a hold of us. Send us an email from our Contact Us page, chat with a specialist on our Facebook Page via Messenger, or give us a call!

+ How much does a Paternal Lineage DNA test cost?

  • This is the most asked question by our clients. An informational Paternal Lineage (Y-STR) Test starts at $249.

    For legal or court ordered reasons see our Legal Paternal Lineage (Y-STR) Testing page.


  • Validity Genetics has a quick industry leading turnaround time of only two to three business days for all of our standard DNA collection tests.

    We also have same day rush options available.

    For Paternal Lineage (Y-STR) and Infidelity DNA Tests the results will be prepared and emailed to you within 3-5 business days.


  • Home DNA tests are done to the same standards as our AABB legal paternity tests. Our tests are performed in a fully CAP, A2LA, AABB accredited and ISO 17025/9001 certified laboratory. All of our paternity and family DNA testing services follow strict and validated procedures for processing samples to guarantee the highest degree of accuracy. Our testing process looks for 23 genetic markers ensuring you receive 99.99% accurate test results.