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Blood test to tell baby's gender found reliable
August 9th, 2011
04:00 PM ET

Blood test to tell baby's gender found reliable

A blood test designed to tell the sex of an unborn baby is very reliable, especially after seven weeks' gestation, compared with urine-based tests that are also available to parents, according to new research in this week's issue of Journal of the American Medical Association.

The test based on cell-free fetal DNA taken from the mother's blood, was found to correctly detect a male fetus 95% of the time, when performed seven to 20 weeks’ gestation and then had a near-perfect rate of determining the sex of the child after that.

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