DNA Twin Zygosity

Peace of Mind Twin Zygosity Test

What is a DNA Twin Zygosity test and what does it check for?

  • premium home DNA twin test using 16 genetic markers
  • determines whether twins are identical, fraternal or siblings
  • AABB, ISO 17025 and CLIA accredited DNA tests

Product code: 21323132

Price : £220.00

Quantity :

Who needs to be tested?

This test involves two alleged twins and will determine whether the twins in question are identical twins, fraternal twins or simply siblings. Both twins will need to provide a DNA sample for the testing process.

How do I take the test?

The DNA test is easy to use and will involve a mouth swab being taken from each subject being tested. You will receive two cotton swabs per person in separate envelopes. One swab is used to take a saliva cell sample from the inside left cheek, and the other swab is used to take a saliva cell sample from the inside right cheek. You should ensure that the cotton swab is completely dry before you place it in the envelope, and that you have clearly labelled each subjectís envelopes for processing. Itís important that you do not consume any coffee, alcohol or tobacco-related products at least four hours before the test. Detailed instructions for how to take each test will be included in your test kit.

What twin zygosity tests are available?

There are two types of twin zygosity tests available from TestDiagnostics Ė a peace of mind twin zygosity DNA test or a court approved twin zygosity DNA test. A peace of mind twin zygosity test is taken in private in your home if you are concerned about the relationship between your twin. The test can determine whether you are indeed identical (created when a single egg is fertilised and then splits) twins, fraternal (created when two separate eggs are fertilised), or just siblings. With a peace of mind test, you donít need to involve a third party during the testing process. Please note this type of test cannot be upheld in a court of law.

A court approved DNA test can be used for all legal purposes, and requires that a neutral third party or medical professional perform or witness the swab collection. The test subjects submitting their DNA samples must also provide the third party with recent passport photos as well as positive photographic identification such as a passport and utility bill. Please note that this medical professional must be organised by the test subjects themselves and may charge an additional fee which is not included in the TestDiagnostics fees.

How will I get my results?

Your results will be available to download from our secure area just one week after our laboratory receives your completed sample. You need to ensure that you have fully completed all forms and required information included in your test pack so that the laboratory can make the most accurate analysis, in the fastest time possible.

If you have taken a court-approved DNA test, a notarised copy of your results and supporting documentation will in addition be posted to your specified address.

All TestDiagnostics DNA testing and analysis is carried out at an accredited laboratory in accordance with the internationally recognised International Standard ISO/IEC 17025:2005. Our partner laboratoryís accreditations include CLIA, AABB, Ministry of Justice, A2LA and NATA and our test kits contain FDA-approved components. Our customer service team is on hand 9am to 5pm every weekday to assist you with any questions you may have about our tests and service, and to provide support and advice once you receive your test results. Please contact us if you have any questions you about our tests and/or lab accreditations. Alternatively, please click here for more information about our DNA tests.

TestDiagnostics require prior consent from every person providing a DNA sample for testing purposes. In the case of a minor, the parentís or guardianís consent in required.