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At what stage of pregnancy is prenatal diagnosis carried out?

April 26, 2017diagnosis pregnancy prenatal Stage

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At what stage of pregnancy is prenatal diagnosis carried out?

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Prenatal diagnosis can be carried out in the 1st, 2nd or 3rd trimester depending on the stage at which an abnormality is suspected. Different tissues are sampled according to the gestational age, e.g. Chorionic villus (which forms the placenta) at 8-12 weeks Amniotic fluid (which surrounds the fetus) at 15-18 weeks Cord blood (from the umbilical cord) at >18 weeks.