Legal Grandparentage 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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The DNA Grandparent Test is best used when the alleged father is unavailable for testing. Either or both grandparents can take this test to determine if they are the biological grandparents of a grandchild. The test can be performed on individuals of any age, from infants to adult grandchildren, and provides a comprehensive genetic report with every test.

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:

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How Legal Testing Works

Legal Grandparentage Test: 2024 Fee Schedule

Test TypeLegal Test Kit
1 grandchild, 1 grandmother£339, Order »
1 grandchild, 1 grandfather£339, Order »
1 grandchild, 1 grandmother, 1 grandfather£458, Order »
1 grandchild, 1 grandmother, 1 mother£458, Order »
1 grandchild, 1 grandfather, 1 mother£458, Order »
1 grandchild, 1 grandmother, 1 grandfather, 1 mother£577, Order »
2 grandchildren, 1 grandmother£458, Order »
2 grandchildren, 1 grandfather£458, Order »
2 grandchildren, 1 grandmother, 1 grandfather£577, Order »
2 grandchildren, 1 grandmother, 1 mother£577, Order »
2 grandchildren, 1 grandfather, 1 mother£577, Order »
2 grandchildren, 1 grandmother, 1 grandfather, 1 mother£696, Order »
3 grandchildren, 1 grandmother£577, Order »

3 Easy Ways to Order Your Legal Grandparentage Test

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Frequently Asked Questions

The process of a DNA grandparentage test begins with the collection of samples from the grandparent(s) and grandchild through a buccal swab (mouth swab). This procedure gathers cells containing unique genetic information, or DNA (deoxyribonucleic acid). This DNA represents a “genetic blueprint” that is as unique to an individual as their fingerprint.

Once the samples are collected, they are sent to the laboratory for processing. Here, DNA is extracted from the cells, and specific regions of the DNA are amplified using a technique called PCR (polymerase chain reaction). This method allows for careful examination and comparison of the grandparent’s and grandchild’s DNA patterns.

The next step is the statistical analysis, which calculates a “grandparentage index”. This index is based on the typical DNA matches found in true biological grandparent-grandchild pairs.

The grandparentage index, a statistical measure of how closely the grandchild’s DNA matches the grandparent’s, is used to ascertain the likelihood of a biological relationship. An index value greater than 1.0 typically indicates a biological grandparent-grandchild relationship, whereas an index value less than 1.0 suggests that they are likely not biologically related. The greater the index value above 1.0, the higher the likelihood of a biological relationship, and the lower the value below 1.0, the lower the likelihood.

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 Grandparentage Test
Starting at £339.00
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