Identical Twin Study

Identical Twin Study

Twin Zygosity

The Twin Zygosity study is a DNA test that assesses the biological relationship between twins—determining if twins are identical or fraternal. This type of testing can provide necessary medical information.

Testing Twin Zygosity

$450 Tests Twin A and Twin B

Price includes standard collection fees.

A convenient appointment will be arranged at a collection facility in your area or a kit sent to your home—for non-legal results. Please complete and mail the application form and payment to our office at the address below in order to begin the DNA testing coordination. Call our office if you wish to pay with a credit card or have additional questions.