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DNA Grandparentage Tests

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, although the inclusion of other close relatives in the test is always recommended.

Register a case

How do I register for testing?

You can complete your registration using our online service or by calling Cellmark's Customer Services team on 0800 036 2522. Cellmark will assist with arranging a convenient time for an appointment for the DNA samples to be taken using:

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

If you use a GP you should allow at least two days for Cellmark to deliver the DNA sampling kit to the chosen doctor(s). Each person being sampled will also need two passport-sized photographs or photo ID with them to confirm their identity. However, if you elect to use Cellmark's sampling service they will have kits and forms and no photographs are required as they will be taken digitally. 

How accurate is a DNA Grandparentage test?

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. Please call our customer services team free, in confidence, on 0800 036 2522 if you have any questions about Grandparentage testing.

More relationship DNA testing information...

Next Day DNA testing

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 laboratory before 10am, we aim to send the test result to you by the end of the next working day by email.

Next DNA testing as standard

Free Confidential Advice

A DNA test can be a life changing experience and therefore we would urge potential customers to consider whether it is the best interests of all parties involved, and that you have their consent, before deciding to proceed with testing. Please call our customer services team free, in confidence, on 0800 036 2522 if you have any questions about paternity testing. 

Free confidential paternity testing advice

Home Grandparentage Testing

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

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