DNA testing can be used to confirm if two individuals are identical or non-identical (fraternal) twins.
Identical or monozygotic twins develop from a single fertilized egg that divides and develops as two separate embryos. Identical twins have exactly the same DNA. They will be the same sex and they are more likely to look like each other.
Fraternal or non-identical twins develop from two separate fertilized eggs. Non-identical twins will share on average half of their DNA, similar to the percentage of DNA shared by two siblings who are not twins. Fraternal twins can be the same or different genders.
Twin tests are generally performed to confirm whether twins are identical or non-identical. The test requires a DNA sample from each twin, usually collected using a cotton swab rubbed inside the cheek.
Click Request a Callback and complete the simple form. One of our representatives will reach out to you.
The following is the basic information we will need to process your order while on the call:
- Names of the children and adults who will be involved in the test
- Current contact information for all parties involved
- A return address/email for the results
- A valid credit card for payment
Prices for a twin test vary based on the number of people tested. Our customer service team can guide you to the correct testing based on your individual needs.
This is a non-legal kit for personal information only. If you need a test that follows chain of custody or that can be used in a court of law, click here. This is a non-legal kit. You will receive it in the mail, collect DNA using the enclosed cheek swabs, and ship your kit back to our laboratory using the enclosed shipping label. You will receive your results in a timely manner, typically 3-5 days from receipt of your samples at our lab.