Dna Testing: Prenatal Dna Testing
By Alex Blake
The popularity of DNA testing continues to grow in our society. Some observers have expressed concern about the emotional and financial impact of DNA test results on young children. can now be determined before a baby is born through the use of prenatal DNA testing.
Prenatal DNA testing is possible because a child's DNA is formed at conception and does not change. Although prenatal DNA testing is a little more involved than a standard home DNA test, the process is still fairly straightforward. The accuracy levels of prenatal DNA testing are identical to standard DNA testing.
Prenatal DNA testing requires samples from the unborn child, the mother, and the alleged father. DNA samples from the unborn child are collected via amniocentesis or CVS. Amniocentesis is the removal of a small sample of the amniotic fluid surrounding the fetus. Amniocentesis can be performed during the 14th to 24th week of pregnancy.
Prenatal DNA testing also requires a separate physician's fee for drawing the DNA samples. DNA samples from the parents are collected via a buccal swab rubbed against the inside of the mouth. As with standard DNA testing, DNA sample collection procedures may vary depending on whether you need court-admissible results. Prenatal DNA testing for court proceedings requires proof of identities and chain of custody verification
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by a witness.
Questions have been raised regarding the ethics of prenatal DNA testing, given that there are risks to the fetus. But there are several instances in which prenatal DNA testing is preferred. For example, in cases of artificial insemination, there may be a need to verify the sample source. Some DNA testing labs are now offering the option of non-invasive prenatal DNA testing. Fetal DNA can be isolated out of blood samples drawn from the mother's arm. This lowers the cost of prenatal DNA sample collection, and expands the number of facilities where samples may be drawn. And, most importantly, it eliminates risk to the unborn child.
