Cousin DNA Tests

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Test Price from £950 + VAT

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What is a Cousin DNA Test?

The Cousin DNA test will establish whether two individuals share a common ancestor – which makes them first cousins, second cousins, third cousins, fourth cousins or even fifth cousins. Cousin DNA testing should only be used when closer relatives are not available for testing in order to establish the link.

The Cousin DNA Test can accurately identify relationships as far removed as 5th cousins. The DNA Clinics DNA test is the most detailed and accurate Cousin DNA testing service available.

  • The Extended Cousin DNA Test analyses up to 720,000 DNA Markers
  • 100% Accurate Results
  • Inconclusive rate of 1 in 100
  • Result includes a Section 9 Expert report.

What type of cousins are we?

A cousin is technically a relative with whom a person shares a common ancestor, when that ancestor is not a parent, sibling, child of a sibling, or sibling of a parent. The most popular and well known form of cousinship is ‘first cousins’ when the two individual share the same grandparents.

As a relationship between two people becomes more complex, it becomes more confusing as to what the potential relationship is that exists.

Tracking individuals through a family tree can help establish where the potential link between two people lies.

There are ‘levels of cousin’, or ‘degrees of cousinship’ and also ‘removals of cousinship’. These terms can cause further confusion and it is important to establish exactly what the potential relationships are before ordering a Cousin DNA test.

If you would like some guidance on how to check the level of cousinship, please follow the link below:

Guide to Cousinship >>>

What forms of Extended Cousin Test exist?

This Cousin DNA test can be performed between individuals who believe they are related to a common ancestor and accurately identify the relationship between the two participants as far removed as 5th cousins.

There are many varieties of Cousin DNA Testing, depending on the situation known:

  • Cousin OR Unrelated Test– This form of test is carried out when the participants believe they either share a common ancestor or are unrelated.
  • At DNA Clinics, a Clinical Advisor will work with you to establish exactly what the situation is and what the known facts are, thus determining the correct form of test for your family.

At DNA Clinics, a Clinical Advisor will work with you to establish exactly what the situation is and what the known facts are, thus determining the correct form of test for your family.

How does the Cousin DNA test work?

The test analyses up to 720,000 DNA markers on the DNA strand for each test participant. These markers are compared and the matches calculated to provide evidence of what relationship most likely exists.

The test is based on the fact that the closer related and individual is to another person, the more DNA they will have in common.

Paternal and Maternal lines can also be mapped using Y Chromosome analysis and Mitochondrial DNA tests.

For full details on how this DNA test works please visit the Extended Family DNA testing page >>>

Are there other forms of DNA test that can be used?

If siblings are available for testing then Sibling DNA tests should be used if possible. In addition, despite the accuracy of Cousin DNA tests, no DNA test can replace the tests that directly test the DNA of a biological parent. If it is the father of a child that is in question, then a Paternity test should be used if possible and forensic testing considered if samples are available.

Whether a different DNA test is recommended by your Clinical Adviser, will depend on the question you are trying to find answers to and who or what samples are available for testing.

This DNA test is able to establish answers to the following questions:

Are we first or second cousins? Are we related? How can I prove we are cousins?
Are we third cousins? Is he my cousin’s son? Is she my cousin’s daughter?
Is she her father’s cousin? Is he her father’s cousin?

Local DNA Clinics providing unrivaled support for Cousin DNA Tests...

Kids JumpingDNA Clinics provide unrivaled support and advice when it comes to complex relationship DNA tests. We provide a dedicated Clinical Adviser to guide you through the DNA Testing process, whilst our scientists are at hand to provide further technical assistance. To discuss the requirements for your Cousin DNA Test, please call 0800 032 5945.


Have your DNA Test Samples collected from the comfort of your own home...
District Nurse

Regardless of the complexity of your Cousin DNA test, DNA Clinics trained mobile sample collectors are still available to collect your DNA samples from a location of your choice.


DNA Self-collection kits are available for this DNA Test...

Young White Couple

You may prefer to collect your own DNA mouth swab samples and be comfortable enough to complete the necessary paperwork yourself. If this is the case, DNA Clinics DNA testing kits are available to order from our on-line store here FREE DNA test kit. Alternatively you can call 0800 988 7107 to order via telephone (Recommended for this type of test).



Which Cousin DNA Test is right for you?

Peace of Mind Cousin DNA Testing >>>

Legal Cousin DNA Testing >>>

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Self-Collection Cousin DNA Testing >>>


What to do Next?

  1. Choose your preferred DNA sample collection service.
  2. For all Extended Cousin DNA tests (except on-line DNA Test Kit orders), call FREE from the UK on 0800 032 5945 or Ireland on 1800 806 151 to organise your appointment.
  3. Attend the appointment to have your DNA samples collected by a fully trained professional.
  4. Your DNA samples are processed in Crystal Healths accredited laboratory.
  5. You will receive your Cousin DNA test results via your chosen method.


Frequently Asked Questions for Cousin DNA Testing

Where can I get an Cousin DNA test done? >>>

Can I get a free Cousin DNA test kit? >>>

Do I need a legal Cousin DNA test? >>>

How much does an Cousin DNA test cost? >>>