New testing technology is highly accurate, study finds
(NEWSER) - Blood tests that promise to determine a baby's sex just seven weeks into pregnancy are highly accurate if used properly, a new study finds. Researchers found that the tests, which analyze fetal DNA in the mother's blood, are 95% accurate at seven weeks and 99% accurate at 20 weeks, the New York Times reports. Tests that analyzed urine instead of DNA, however, were accurate just 41% of the time—a prediction rate "worse than flipping a coin," a researcher tells LiveScience. More»
