Twin Zygosity Testing

Twin zygosity testing can be performed to determine whether twins are fraternal or identical.Only the two siblings are required to participate in this test.

Twins can be either monozygotic (identical) or dizygotic (fraternal). Monozygotic twins, because their genetic makeup is exactly the same, can always act as organ, tissue, or blood donors for each other. Monozygotic twins are also likely to develop the same genetic disorders - if a disorder is exhibited in one twin, it is likely the other twin will develop it as well.

A twin zygosity test will help parents or twins themselves better prepare for the future, providing additional genetic information and medical history.

If you are interested in learning more about our twin zygosity DNA testing services, or if you would like to order a twin zygosity test, please contact one of our knowledgeable client services representatives at 1-800-284-0573.


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