how soon can amniocentesis be done
Amniotic fluid has cells and other substances that can give clues about the health of your fetus. Amniocentesis is done by gently putting a needle through your belly into your uterus. About 2 Tbsp (30 mL) of the amniotic fluid is taken out and looked at.Amniocentesis is generally done between weeks 15 and 20 (usually around week 16) to look at genetic information.It can also be used later in pregnancy to see how the fetus is doing.mniocentesis for birth defects testing. Amniocentesis is often done around week 16 to see whether a fetus has certain types of birth defects. Amniocentesis can also tell the sex of your fetus.