DNA sibling testing

AlphaBiolabs uses DNA technology to determine whether two or more individuals are full-siblings or half-siblings.

When both people have the same biological parents, they are classed as full-siblings. Half-siblings are individuals who share only one biological parent, either the mother or father.

When testing for sibling relationships, the DNA laboratory will determine the genetic profile of the possible siblings and will calculate a sibling DNA index or likelihood ratio.

Full siblings usually have more DNA in common than half-siblings, while half siblings normally share more DNA than unrelated persons.

Order a Sibling DNA Test online now for just £149 with next day results or  upgrade to same day results for an extra £70.

Your test kit will be sent to your preferred address in discreet, plain packaging, for full confidentiality.

How we do our DNA testing

We utilise the most up-to-date DNA testing technology to ensure the reliability and accuracy of our genetic testing. 

Our Sibling DNA test analyses up to 42 DNA markers (loci) – double the industry standard for DNA testing – to determine whether the tested individuals are likely to be full-siblings or half-siblings.

Our at-home Sibling DNA Test kit includes mouth swabs to be rubbed gently and painlessly on the inside of the cheek to collect cheek cell DNA, with no needles required.

Your DNA test kit will be sent directly to an address of your choice using discreet, plain packaging for full confidentiality.

If you require a second DNA kit to a second shipping address, you can select this option at the checkout.