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Twin Zygosity DNA Test

If you need to conclusively determine whether twins are identical or fraternal, the Twin Zygosity test is the best option for you.

  • Results within 5 days
  • Accuracy up to 100%
  • 100% confidential

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Developments in technology over the past several decades have lead to DNA testing, which can conclusively establish whether two or more individuals share a biological relationship. Laboratory testing is used to analyse DNA sequences for this purpose. It is now possible to collect the samples for these tests in the home by using a home test kit. These samples can then be sent to our partner laboratory for the analysis to take place. Any number of biological relationships can be determined with this method, such as those of paternity or maternity. DNA testing for twins is also possible with the Twin Zygosity test.

What does the Twin Zygosity test check for?

Twin DNA testing utilises the same basic methods as other DNA tests, such as paternity tests. The Twin Zygosity test uses the samples collected from the inner cheek to analyse the DNA sequences of each twin being tested. A DNA profile is created for each person, and these are then compared. If the DNA profile is exactly the same for each, then it is clear that the individuals are identical twins (monozygotic twins). If the DNA profile is not exactly the same, then the twins are considered fraternal (dizygotic twins).

How does Twin Zygosity testing work?

The Twin Zygosity test requires two swab samples from every individual being tested taken from the right and left inner cheeks. These will then be analysed in our partner laboratory. If you require the results of this test for legal reasons, you will need to buy a court approved Twin Zygosity test. If the results are needed for solely personal reasons, a peace of mind test will be sufficient.

Peace of mind twin DNA testing

The collection of the samples is very straightforward for peace of mind purposes. You will simply need to order the test kit online at HealthExpress and it will be sent to your door in a matter of days. You will find contained in the test kit the sample collection swabs (two per individual), a set of instructions and the relevant documentation. You will need to read the instructions carefully before you collect the samples, as not doing so may affect the accuracy of the results. After you have collected the samples, sign the enclosed documents as required and then send the test kit to our partner laboratory, where the samples will be analysed.

Court approved twin DNA testing

The collection method differs for this test. The main difference is that you cannot collect the samples yourself; this needs to be done by a neutral third party who is qualified for this purpose, such as a GP. The appointment for the sample collection will need to be made before you take the test. For the appointment itself, you will need to have completed the registration forms and supply two passport-sized photographs and IDs of each individual being tested, which will be signed by the sampler to verify a true likeness. Once the samples have been collected, the sampler will need to sign the relevant documentation. The samples and the documents can then be sent to our partner laboratory for testing.

Why should you take the Twin Zygosity test?

It can be difficult to know for certain whether twins share a fraternal or identical twinship, which is why a test like the Twin Zygosity test is useful. It is the only way to definitively establish the nature of the relationship between twins.

Can I buy the Twin Zygosity test online?

You can safely and securely buy the Twin Zygosity test online from HealthExpress. Once you have selected what test you require - either the court approved or peace of mind test - you can complete the ordering process. Next day delivery is available as part of our efficient and confidential service.

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