Which test for Down syndrome?

There are two main types of tests for Down syndrome used in Australia:

1. Screening tests (non-invasive): 
   • First trimester combined screening – blood test and ultrasound to estimate risk. 
   • Non-Invasive Prenatal Testing (NIPT) – a maternal blood test that examines fragments of the baby’s DNA. This is highly accurate but still considered a screening test. 
2. Diagnostic tests (invasive): 
   • Chorionic Villus Sampling (CVS) – performed at 11–14 weeks, tests placental tissue. 
   • Amniocentesis – performed at 15–20 weeks, tests amniotic fluid. 

Screening shows the chance of Down syndrome, while diagnostic tests confirm with certainty.

If you’d like to understand which test is right for your situation, book consultation now.