The Harmony test is a type of non-invasive prenatal test. The Harmony test assesses blood from the mother, looking at the baby’s DNA in her blood (analyses maternal serum for foetal DNA).
It provides limited screening for chromosomes 21, 13, 18 and/or XY (sex chromosomes).

The Harmony test identifies:
• 99% of the foetuses with trisomy 21 (Down syndrome)
• 97% of foetuses with trisomy 18 (Edwards syndrome)
• 92% of foetuses with trisomy 13 (Patau syndrome)

The Harmony test is an advanced screening test rather than a diagnostic test. It does not detect all cases of trisomy 21, 18 or 13.

The Harmony test is a simple blood test with no risk to the foetus. It can be performed after 10 weeks of gestation. It can be performed in both single and twin pregnancies, as well as IVF pregnancies.