DNA Grandparantage Tests

Grandparent testing can be useful for establishing a relationship in situations where the potential father cannot be tested. It can be used to examine the relationship between a child and a possible grandparent, although the inclusion of other close relatives in the test is always recommended.

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Grandparent DNA Testing


Next Day Grandparentage DNA Test Results

As with all of our DNA relationship testing services we offer a 'Next Day DNA' service, as standard at no extra cost. This means that if all the DNA samples for your test arrive at our UK testing laboratory before 10am, we aim to send the test result to you by the end of the next working day by email.

DNA Testing Information


Arranging Testing and DNA Sampling

You can complete your grandparent DNA test registration online or by calling our Customer Services team. Cellmark will assist with arranging appointments for DNA samples to be taken. You can use:

  1. Our dedicated nationwide mobile sampling service
  2. Your own GP
  3. A GP from the list we supply

At the sample collection appointment a mouth swab will be rubbed gently and painlessly on the inside of the mouth to collect a sample of cheek cells.

Sampling Information

Taking a DNA testing Sample
Ministry of Justice, UKAS, SGS and Cyber Essentials Plus Logo


UK Accredited Laboratory

As a member of the Ministry of Justice's list of accredited bodies, Cellmark is accredited to carry out parentage tests directed by the civil courts in England and Wales under section 20 of the Family Law Reform Act 1969. Our laboratory in Abingdon, Oxfordshire is accredited to ISO 17025. Cellmark is a UKAS accredited testing laboratory No. 2045 and is certified to ISO 9001, ISO 14001 and ISO 27001 international quality standards.


Further Grandparent DNA Testing Information

Grandparentage testing can be useful for establishing a relationship in situations where the potential father cannot be tested. It can be used to examine the relationship between a child and a possible grandparent.

Grandparentage testing can be used to establish the paternity of a child when samples can be obtained from the child and from both paternal grandparents (alternatively, should you wish to identify a maternal relationship then both maternal grandparents will be required to provide samples). If however the child, the mother and only one of the paternal grandparents are available, the test will be able to provide a strong indication of whether the child is related to the paternal grandparent (and therefore to the missing father), but it cannot provide a conclusive result.

It is possible to just compare the DNA profile of a child and an alleged grandparent (although we prefer that the mother is tested). This can provide an indication of a relationship but, because of the patterns of DNA inheritance, it will not always reveal the true nature of the relationship. Such an analysis will report the most likely relationship given the DNA evidence. 

Cellmark provides a fast court approved service without compromising accuracy and quality, giving you the reassurance that your testing is in good hands. Our prices start from £324 (+VAT).

Our testing prices include the following - as standard:

  • All sampling kits and the cost of sending them to UK sampling locations.
  • Pre-paid return envelopes to safely transport the samples to our laboratory.
  • The cost of testing the samples once they have been received at our laboratory.
  • Our standard 'Next Day' turn around time.
  • The cost of producing and delivering the final test report.
  • Our advice service for the duration of the case accessible via email, Freephone and our web Chat service.

Please note, in addition to the DNA testing cost, you will also need to pay to have the DNA samples taken. Our customer services team can provide full details on how the sampling process works and the costs involved.

Read all our DNA testing FAQs


Home Grandparent DNA Testing

In addition to legal or Court approved grandparentage testing we also provide a 'peace of mind' or 'curiosity' home testing service. Please visit our home DNA testing website for more information and to purchase one of our home DNA test kits. 

Home DNA testing