Non-Invasive Prenatal Paternity Tests FAQ

How is it done?
A small amount of a baby's DNA is present in the mother's blood. A safe blood draw from the mother can determine the father of a baby by matching the baby's DNA with the father's DNA.

How accurate is it?
A DNA paternity test can either confirm or exclude an alleged father. The DNA paternity test we offer will either provide a greater than 99.9% probability of paternity or an exclusion with a minimum of six non-matching DNA locations between an alleged father and the baby.

Where do I go?
Please contact PTC at 888-837-8323 to make convenient arrangements for you.

How early can you detect fetal DNA?
Fetal DNA can begin to be detected as early as 5 weeks and the available amount increases rapidly throughout the first trimester. We can perform a very reliable DNA test from fetal DNA present in the mother's blood after the 8th week of pregnancy.

Can cells last from a previous pregnancy?
In the mother's blood there are intact fetal cells and free floating fetal DNA, which was released from intact fetal cells destroyed by the mother's immune system. While it is thought that a few rare intact fetal cells can escape the mother's immune system and persist from previous pregnancies, free floating fetal DNA can only last for a few hours. Therefore, all of our tests are based on free floating fetal DNA present in the mother's blood rather than intact fetal cells. It has been well shown that free floating fetal DNA can not exist from previous pregnancies.

Is this technology approved by any governing bodies?
The laboratory has been recognized and approved by the College of American pathologists (CAP) and has received a certificate of accreditation under the Clinical Laboratory Improvement Amendments (CLIA).

Has this technology been published?
The basis of this technology has been published in top medical journals such as The New England Journal of Medicine, The Lancet and the Journal of the American Medical Association.

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