Legal Cousin Test

Genetrack Biolabs is accredited by the Ministry of Justice as a body that may carry out parentage tests directed by the civil courts in England and Wales under section 20 of the Family Law Reform Act 1969.
Starting at £339.00
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This DNA Cousin Test is an ideal way to determine the likelihood that individuals are first cousins, when the parent(s) in question are not available for testing. The mouth swab can be collected quickly and discreetly in the privacy of your own home and sent to our laboratory for analysis. You will receive your results in your online account or by mail or email.

A legal DNA test is a type of DNA test used to establish biological relationships for legal proceedings. A key requirement of these tests is that DNA samples must be collected by a registered medical practitioner following a strict chain of custody protocol. This means the DNA samples are collected, documented, and transported in a way that ensures they remain untouched and unaltered until they reach the testing laboratory.

Legal DNA testing is performed when there's a need to establish a biological relationship between individuals. The results from legal DNA tests are frequently employed in legal proceedings including:

Our Benefits

How Legal Testing Works

Legal Cousin Test: 2024 Fee Schedule

Test TypeLegal Test Kit
2 cousins£339, Order »
3 cousins£458, Order »

3 Easy Ways to Order Your Legal Cousin Test

Our Accreditations

Frequently Asked Questions

During a DNA cousin test, a buccal (mouth) swab is taken from each alleged cousin to collect cells containing genetic information in the form of DNA (deoxyribonucleic acid). Each person’s DNA represents a unique “genetic blueprint,” similar to a fingerprint.

In the laboratory, the DNA is extracted from the cells, and specific DNA regions are amplified using a process called PCR (polymerase chain reaction). This amplification process focuses on short tandem repeats (STRs), which are regions of DNA where a short sequence is repeated multiple times. STRs are highly variable throughout the genome, making them a reliable way to confirm or refute biological relationships.

By comparing the STR profiles of each alleged cousin, the DNA cousin test can determine the probability of a biological relationship between them.

The main difference lies in how the DNA sample is collected. For a legal DNA test, the sample collection process must be witnessed by an impartial third party following a strict chain of custody protocol, ensuring that the results are admissible in court. Home DNA tests don't require this, as they are often used for personal knowledge and not intended for legal proceedings. There is no difference in the accuracy between our home DNA tests and legal DNA tests.

We understand the urgency often associated with legal DNA testing. Once the samples are received by our lab, you can expect results within 1-2 business days.

To ensure DNA results are admissible in UK legal proceedings, the DNA samples must be collected by a registered medical practitioner and witnessed following a strict chain-of-custody protocol.

Self-Arranged Collection: Our home legal optionoffers the flexibility of arranging your own independent medically qualified person, such as a physician or registered nurse, for sample collection and witnessing services. This individual must act impartially and cannot be related to you or have any personal or financial interest in the test's outcome.

Laboratory-Arranged Collection: With this option, our experienced laboratory staff will handle everything. They will directly communicate with all test participants to arrange appointments at a time that works for everyone.

No – we can accommodate separate DNA sample collection appointments if needed.

For our home legal DNA tests, the individual kits can be split and mailed separately.

Legal DNA relationship tests employ strict identification and witnessing protocols to ensure the correct individuals are being tested.

During DNA sample collection, each participant is required to present two forms of identification. One of these must be a photo ID, and they must also provide a recent photograph. In addition, fingerprints are taken as an additional measure of identification.

Lastly, a registered medical practitioner who has no connection to the case or the individuals involved will also be responsible for overseeing and documenting the entire process.

Yes, a DNA test can be safely performed on a baby. The DNA sample is collected via a non-invasive cheek swab, which is painless and safe for individuals of all ages.

In a paternity test, it is not required to test the mother in order to obtain a conclusive legal DNA test result. The test can be absolutely conclusive even with just the alleged father and child's samples. However, including the mother's DNA can help strengthen the results, but it is entirely optional

For other relationship tests like sibling or grandparentage tests, the inclusion of the mother's DNA may help in obtaining more precise results.

DNA paternity testing can be arranged online, by phone or by fax. Questions can be directed to the laboratory by email at or by phone at 1-855-284-6553. Our DNA advisors will be able to answer any questions you may have or to help you to schedule an appointment for testing.

Legal Cousin Test
Starting at £339.00
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