Amniocentesis is usually done between 15–20 weeks of pregnancy. Doing it in this window ensures the amnio procedure is safe for the mother and provides accurate results about fetal health. Earlier procedures carry higher amino risks, and later ones may limit treatment options if something is detected.

Timing Highlights

• Early second trimester (15–20 weeks) - optimal for genetic testing.
• Can be delayed slightly if needed, but earlier testing is generally avoided.
• Ensures enough amniotic fluid for testing without putting the baby at high risk.