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Twin Zygosity DNA Testing

This DNA test determines whether siblings are fraternal or identical twins or siblings. The cost of the DNA testing service includes two children but you may add more as needed; for instance a third sibling. Parental samples are optional; if provided, paternity and/or maternity can also be verified.

New York State Residents
New York State has specific requirements for DNA testing including: collection by a third party under chain of custody; the specimen must be accompanied by a test order from your physician or lawyer; and specimens must be submitted to and analyzed by a laboratory holding a NYS permit. Click here to view our New York State Department of Health certificate. Call 1-866-833-6895 to place an order.
The cost of the twin zygosity test service includes two children but you may add more as needed; for instance a third sibling. Parental samples are optional; if provided, paternity and/or maternity can also be verified. Learn More
If you believe you'll need your test results to be legally binding, you'll need the Legally Binding Test. Learn More
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