The UK's most experienced DNA testing service     0800 036 2522  Call Us:
DNA Testing and Hair Drug and Alcohol tests for the public
DNA Testing and Hair Drug and Alcohol tests for the public

Court Approved DNA Tests

Established in 1987, Cellmark is the UK's most experienced DNA testing service.

Paternity testing is not a decision which should be entered into lightly. Please consider whether this is the best course of action, particularly for any children involved. It may help you to discuss the issues and possible outcomes with a third party, either a friend or family member or an independent advice service.

If you are representing yourself in court (as a "Litigant in Person") Cellmark's experienced Customer Services team will assist you in getting the right test and provide reports that are accepted by the courts - for further information phone our team on 0800 036 2522

Once you have made the decision to proceed Cellmark can assure you that your case will be dealt with in a highly professional and ethical manner and we will do all we can to make the process as simple as possible for all involved.


Relationship testing is undertaken using DNA analysis called Short Tandem Repeat (STR) profiling. A minimum of 22 STR tests are used to analyse a claimed relationship. In paternity cases when a mother, child and father are tested, Cellmark will either exclude the man with 100% certainty, or provide a probability of paternity in excess of 99.9999%.

Developments in the sensitivity of DNA analysis mean that your sample can be taken, simply and painlessly, using mouth swabs. For your test results to be accepted by the UK courts you will need to have the sampling to be taken by an independent person, someone who is either a medically qualified practitioner or a testing lab trained sampler, who has no financial interest in the outcome of the tests.

Any reputable DNA testing company, such as Cellmark, will be accredited by the Ministry of Justice as a body that may carry out parentage tests as directed by the civil courts in England and Wales under section 20 of the Family Law Reform Act 1969. This means that they abide by the terms of the Human Tissue Act, adhere to the Human Genetics Commission's "Common Framework of Principles", their labs have the relevant ISO accreditation (ISO17025) and they market their services in an ethical manner.

Established in 1987 Cellmark pioneered the introduction of DNA analysis for paternity testing and has already undertaken DNA sampling for over 500,000 people - just like you.


"May I take this time to thank you and your company for all the great service you have provided..."


"...your service is second to none: the process and customer service I receive was outstanding - I'm very proud of your service and will highly recommend it."


"Thank you again, you are mighty professional very impressed with your service."

 Find out more

From ensuring that you have the right information before commencing the process to understanding what the final test report means - we aim to provide assistance every step of the way.

  Free Advice

We're here to provide help and assistance. Call our customer services team on 0800 036 2522 Mondays 8.30am-7pm and Tuesday-Friday 8.30am-6pm - or text us, email us or "chat" to us.

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