Sibling DNA Test


Confirm if two people are half-siblings, full-siblings, or do not share a sibling relationship.

  • Accuracy guaranteed
  • Simple cheek swab for 2 siblings, option to add mother
  • Get results within 5 days after we receive your samples


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SKU: 004 Category:


Icon Accuracy Guaranteed
Accuracy Guaranteed
Up to 34 genetic regions tested
Icon Discreet
Get answers privately
Icon Accredited Labs
AABB Accredited Lab
Results from the most accredited lab in the world
Icon Easy At-Home Test
Easy At-Home Test
No doctor’s visit required
Father and son

Get clarity about your relationships with a sibling DNA test.

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3 Easy Steps to Get the Answers You Need


Swab Your Cheek

Once you’ve received your DNA test kit, follow the included instructions to collect your buccal swab sample right from home.

Mail Your Sample

Send your sample using the included prepaid mailer via iFedEx or USPS.

Get Results

Get fast, accurate results via our secure online portal, and get the answers you need to move forward.

Why Us?

Frequently Asked Questions

Is a sibling DNA test as accurate as a paternity test?

Does the siblings' mother need to participate?

Can a sibling DNA test be done without a mother’s DNA?

Can I get a legal sibling DNA test?

What do the results of my sibling DNA test mean?

Sibling DNA Test Reviews