The Harmony Test is a non-invasive prenatal screening test (NIPT) that checks for certain chromosomal conditions in your baby using a simple blood draw. It is typically offered after 10 weeks of pregnancy and is not diagnostic—it estimates the likelihood of a condition but does not confirm it.
What does It screen for?
- Common Trisomies:
Down syndrome (Trisomy 21)
Edwards syndrome (Trisomy 18)
Patau syndrome (Trisomy 13) - Sex chromosome differences (e.g., Turner syndrome, Klinefelter syndrome).
- Foetal sex (optional, if parents want to know).
How does It work?
- Blood Sample: A small amount of blood is taken from your arm.
- Analysis: The test detects tiny fragments of the baby’s DNA in your blood (cell-free DNA).
- Results: Usually available in 7–10 days.
Accuracy
- Over 99% accurate for detecting Down syndrome.
- Lower accuracy for rarer conditions like Trisomy 13/18.
- False positives/negatives are possible; follow-up diagnostic tests (e.g., amniocentesis) are needed for confirmation.
Who should consider the NIPT (Harmony) test?
- High-risk pregnancies:
Maternal age ≥35.
Family history of chromosomal conditions.
Abnormal ultrasound findings. - Low-risk pregnancies: Available to anyone seeking early screening.
eGynaecologist Advice
- Harmony test is non-invasive (no risk to the baby) with high accuracy for common trisomies, however, may not detect all chromosomal issues.
- Results may cause anxiety, and abnormal results require confirmatory testing (e.g., amniocentesis). You should consult your obstetrician or genetic counsellor for further discussion
Frequently Asked Questions
Is the Harmony Test safe?
Yes—it’s a blood test with no physical risk to you or the baby.
What if my result is high-risk?
Your gynaecologist will discuss options, including diagnostic tests like amniocentesis.
Can it replace other prenatal tests?
No—it does not screen for neural tube defects (e.g., spina bifida). A nuchal translucency scan or AFP blood test may still be needed.
Does it tell me the baby’s gender?
Yes, if you choose this option.
What if I have twins?
The test works for twin pregnancies but may be less accurate.
