Legal Genetics offers DNA testing for the determination of twin zygosity. This test determines whether twins are identical or fraternal.

$400 Two individuals (one set of twins)
($200 Each additional person)
$250 Preparation of legal affidavit
Additional fees for shipping and/or sample collection may apply.
Prices may vary slightly depending on actual circumstances.


  • Adults must have picture ID (driver’s license, etc.) and provide social security number.
  • Birth certificates and social security number must be provided for all minor children.
  • Minors (under age 18) must have written consent of mother or legal guardian or the DNA testing must be court ordered.
  • At the time of sample collection, pictures of all those being tested will be taken and consent forms must be signed for results to be admissible in a court of law.
  • Client identification documentation, consent forms, security sealed samples, and a strict chain of custody for the transport of samples must accompany the samples to insure their integrity when collected at a location other than Legal Genetics.
  • Sample collection fees are the responsibility of the client at the time the sample is taken.

Please contact us for more information about these services.

Legal Genetics, Inc.