• How it Works: Order, Collect, Ship & Results
  • Collect in seconds with simple, painless mouth swabs
  • Access your DNA insights anytime, anywhere from your secure online portal
  • Accurate and reliable results you can trust
  • Your data is encrypted and securely stored, and you control who accesses your results.
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DNA Sibling Test

DNA Sibling Test

$149 USD
$149 USD
Sale Sold out
Shipping calculated at checkout.

Are you full siblings, half-siblings, or not related at all? The Genofit Home DNA Sibling Test provides answers about your family connection. Get fast, accurate results available discreetly online within 1 to 2 business days, giving you the information you need with speed and confidentiality.
Turnaround Time
1-2 days
Sample Type
Mouth Swabs
Relationship Tested
2 siblings (full or half)
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Benefits You’ll Love

Easy, Painless Mouth Swabs

Free delivery on all orders

Private & Confidential

Actionable Genetic Insights

Get Started in 3 Easy Steps

  • 1. Purchase Kit

    Order a Genofit test online and we'll ship your test kit directly to your doorstep.

  • 2. Collect & Mail

    Simply collect your sample at home, then mail your sample directly to the lab with free return shipping.

  • 3. Receive Results

    Download your report from your secure online account shortly after the lab receives your sample.

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Siblings and DNA: What’s the connection?

If you've ever questioned whether you and your sibling share one or both biological parents, a DNA test can provide clear answers. The Genofit Home DNA Sibling Test offers a reliable way to understand your biological relationship when the parents are unavailable for testing.

With a simple and painless sample collection process for both participants, you'll learn whether you're full siblings (sharing both parents), half-siblings (sharing one parent), or biologically unrelated, giving you clarity about your family connections. Our secure testing process ensures your privacy and delivers results you can trust, regardless of where you are in the world.

The Science of Sibling DNA Analysis

Our process analyzes up to 27 genetic markers for each person. A child inherits 50% of their DNA from their mother and 50% from their father. Because of this, biological siblings share a significant amount of the same DNA. Our laboratory compares the genetic profiles of the tested individuals to measure the extent of their genetic similarity. To guarantee our 100% accuracy promise, every test is performed twice.

The results are delivered in a secure online report, which includes a sibling index that indicates the likelihood of your relationship.

  • Full Siblings: Individuals who share both biological parents and a high degree of common DNA.
  • Half Siblings: Individuals who share one biological parent and a smaller amount of common DNA.
  • Not Related: Individuals who do not share a biological parent.

Your report will clearly state the Combined Full Sibling Index and Combined Half Sibling Index, each with a corresponding probability percentage, helping you understand your biological connection with confidence.

Why Genofit?

  • Trusted for Accuracy

    Our tests are processed in AABB and CLIA-certified labs using PCR technology to analyze DNA with precision.

    About the Laboratory 

  • Your Privacy Matters

    We prioritize your privacy with a password-protected online portal, ensuring that your results are accessible only to you.

    Sign in to My Account 

  • Support From Experts

    Our dedicated customer care team is ready to guide you through every step, answer your questions, and provide the assistance you need.

    Contact Support 
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