How much DNA do brothers and sisters share?
- How much DNA do brothers and sisters share?
- What can be learnt from a sibling DNA test?
- Where can I buy a sibling DNA test?
What can be learnt from a sibling DNA test?
A sibling DNA test can be used to determine whether two or more individuals are full siblings or half siblings and can be used on males and females.
For a sibling DNA test, cheek swabs are used to collect DNA samples from each sibling taking part in the test.
For the most conclusive result, the laboratory will also request that the biological mother’s DNA sample be submitted for testing, if possible.
Expert geneticists will then analyse and compare the DNA samples to determine the genetic profile of the possible siblings and calculate a sibling DNA index or likelihood ratio.
- A likelihood of greater than 10 supports that the tested individuals are likely to be related
- A likelihood of less than 0.1 is not supportive, meaning the individuals are unlikely to be related
- A likelihood which falls between 0.1 and 10 is considered inconclusive, which means a relationship cannot be determined based on the statistical probability obtained from the analysis
Where can I buy a sibling DNA test?
It’s easy to order your peace of mind Sibling DNA Test online now from just £149, with next working day results.
Simply place your order online and we will ship your test kit out to you in discreet, plain packaging, for full confidentiality.
Your home test kit will contain everything you need to collect your samples and return them to our UKAS-accredited laboratory for analysis by our in-house geneticists.
For confidential advice on whether this test is right for you, call our friendly and discreet Customer Services team on 0333 600 1300 or email firstname.lastname@example.org.
Sibling DNA Test
Order our home Sibling DNA Test online now from £149, with next working day results.
Head of Genetics at AlphaBiolabs
Casey joined the AlphaBiolabs team in 2012 and heads up both the DNA and Covid-19 testing teams.
An expert in DNA analysis and a member of the International Society for Forensic Genetics (ISFG), Casey holds an MSc with Distinction in DNA Profiling and a First-Class BSc with Honours in Forensic Science.
Casey is responsible for maintaining the highest quality testing standards, as well as looking for ways to further enhance the service that AlphaBiolabs provides and exploring new and innovative techniques in DNA analysis.