DNA Twin Test
$149.00
For the determination of chorionicity (fraternal twins vrs identical twins). Each kit includes complete collection materials and instructions for safe and painless collection of DNA samples from children and adults at any age.
- Collection method: Buccal swabs
- Results in 1-3 business days
Identical Twins & Fraternal Twins
There are two different types of twins: Identical twins, and fraternal twins. When twins are the same sex, it is often impossible to tell for certain whether they are identical twins or fraternal twins. DNA twin zygosity testing can conclusively determine whether twins are identical or fraternal.
Identical Twins
Identical twins are twins which originated from the same egg and the same sperm. They are genetically identical and are always the same sex. Although identical twins usually look very similar, it is sometimes possible for identical twins not to look exactly the same.
Fraternal Twins
Fraternal twins originated from two different eggs and two different sperm. Fraternal twins are the same as siblings which are born at different times and can be the same or different sexes. Like other siblings, fraternal twins can look very similar or can be very different in appearance.
Identical Twins & Fraternal Twins
There are two different types of twins: Identical twins, and fraternal twins. When twins are the same sex, it is often impossible to tell for certain whether they are identical twins or fraternal twins. DNA twin zygosity testing can conclusively determine whether twins are identical or fraternal.
Identical Twins
Identical twins are twins which originated from the same egg and the same sperm. They are genetically identical and are always the same sex. Although identical twins usually look very similar, it is sometimes possible for identical twins not to look exactly the same.
Fraternal Twins
Fraternal twins originated from two different eggs and two different sperm. Fraternal twins are the same as siblings which are born at different times and can be the same or different sexes. Like other siblings, fraternal twins can look very similar or can be very different in appearance.
Our testing laboratory is AABB Accredited, ISO/IEC 17025 Certified and participates in the CAP proficiency testing program.
DNA Twin Test
At the time of delivery, the delivering physician tries to determine whether twins are identical by seeing whether they share the same placenta. However, this is not always clear and is not always an accurate way to determine whether twins are identical or fraternal. When twins are the same sex, the most conclusive method for determining twin zygosity is through DNA testing. Identical twins will share identical DNA profiles, and fraternal twins will have different DNA profiles from each other.
Twin zygosity testing is fast, simple and painless and twins can be tested at any age.
