Prenatal diagnostic procedures

nvasive prenatal diagnostic tests are performed to confirm a diagnosis following an abnormal screening test or a high-risk NIPT result. The procedure is carried out under ultrasound guidance at the stage of pregnancy determined by your treating physician. Your physician will also decide which procedure is appropriate: chorionic villus sampling (CVS) or amniocentesis.

Chorionic villus sampling (CVS) is performed between 10 and 14 weeks of pregnancy by taking a small sample of placental tissue.

Important information

• A referral from your physician and pre-test genetic counselling are required.
• Results are usually available within 2–3 weeks.
• These procedures are performed only when there is a medical indication.