NIPS (Non Invasive Pre Natal Screening) and Serum Screening are commonly performed tests for screening for Trisomy 21 (Down syndrome), Trisomy 18 (Edwards syndrome), Trisomy 13 & Monosomy X (Turner syndrome).

These tests are offered to pregnant women who want to find out if they may be at increased risk of having a baby with any of the above syndromes.