Amniocentesis

Amniocentesis Amniocentesis involves taking a small sample of the amniotic fluid that surrounds the foetus to diagnose for chromosomal abnormalities ( Fig. . ). Ultrasound Transducer Uterus Placenta Foetus Amniotic Fluid Fig. . Amniocentesis XII Std Zoology Chapter XII Std Zoology Chapter Reproductive Health Amniocentesis is generally performed in a pregnant woman between the th and th weeks of pregnancy by inserting a long, thin needle through the abdomen into the amniotic sac to withdraw a small sample of amniotic fluid. The amniotic fluid contains cells shed from the foetus.