Sibling DNA testing kits

Sibling DNA tests can determine whether you are full or half siblings, or unrelated. We offer two sibling test kit options.


Order a free sibling test kit, just pay for the postage and pay the lab fee when you send your samples back.


Pay the full lab fee and we will send your sibling test kit with no postage to pay. With this option, you may also be eligible to spread the cost of the lab fee using Pal Later options with PayPal, if eligible.

Simply choose your preferred option below and follow the steps in the checkout process. You can only use this kit for personal information only, if you require a legal sibling test, please call 0800 988 7107.

Sibling DNA Testing Kits

Why use DNA Clinics for your sibling test?

  • All sibling test kits are free, meaning you only pay for postage (if applicable) or the laboratory test analysis.
  • You can spread the cost of your sibling test by taking advantage of the split payment option, or you could be eligible for PayPal Pay Later options.
  • Fast sibling DNA test results within 5 working days at no extra cost.
  • Full telephone support is available from our experienced team of Clinical Advisors.
  • If you change your mind about self-collection, we have a network of DNA Clinic locations throughout the UK available for appointments. Legal sibling DNA tests are also available at our DNA Clinic locations.

Do you need a legal DNA test?

Unfortunately, DNA self-collection kits cannot be used for any legal purpose. You must book an appointment for a legal DNA test at one of our DNA Clinics.

You can search for a DNA clinic near you by clicking below