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If you are twins, are you or your parents wondering if you are identical or fraternal twins. Appearance alone often is not a reliable method for determining twin zygosity because identical twins do not always look exactly the same.


Our Twin Zygosity Test can determine whether twins are identical or fraternal, since identical twins have the same genetic profile.


Once you order your tests, we will send you a DNA collection kit which contains all the necessary material for the collection and instructions. Please sign the consent form, collect your DNA sample and send sample back to our lab.


If any sample's test fails to get valid data, we can provide you 2nd test for free. You only pay the shipping for re-collection kit

Twin Zygosity Test (two twins)

Excluding Sales Tax
  • If you cancel your test before our kit is shipped. You can get 100% refund. If you cancel your test after our kit is shipped, but we have not received your collected sample, you can get 50% refund. If you cancel your test after we have received your collected sample, you can not get refund. Once we have received your sample, the sample has entered the test precedure.

  • Results of the test are issued in 1 to 3 days following the receipt of the samples at our laboratory. 

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