Prenatal Paternity Testing - Noninvasive Options
Noninvasive prenatal paternity testing is garnering greater attention, as current prenatal DNA tests (which use a needle to remove cells from a woman's womb) continue to raise concerns over potential risks to the pregnancy and the fetus.
The National Institutes of Health reported earlier this year that researchers feel they are growing closer to establishing a noninvasive prenatal paternity test. Such methods generally try to isolate or identify fetal cells or DNA that have entered circulating maternal blood.
But noninvasive prenatal paternity tests are still in their infancy, and additional laboratories must validate the studies before such testing can be offered to the public.
Several difficulties remain with these types of prenatal paternity tests, including:
- Lower-than-acceptable rates of successful genetic testing
- The existence of enough fetal DNA in the blood to test
- The presence of DNA from previous pregnancies (which can remain in maternal blood 20 years or longer)
Because it's not fully tested and established, non-invasive prenatal paternity testing normally isn't offered by labs accredited by the AABB, the international organization tasked with overseeing such testing labs.
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