The Harmony test is a screening test that can be used to assess the risk of certain genetic abnormalities. It is important to ensure that you understand what the test can and can’t tell you before you decide whether it is right for you.
What the Harmony Test Can Tell You
The Harmony test can be used to screen for a selection of different genetic abnormalities
, including the most common forms of trisomy that can cause Down’s, Edward’s and Patau’s syndrome. You will also have the option of screening for additional issues such as sex chromosome abnormalities and microdeletions. For each of these you will be told whether there is a high or low risk that the baby is affected.
- If there is a high risk of a particular abnormality then it is likely that your baby is affected. However, the only way to be sure is to have an invasive test such as amniocentesis or chorionic villus sampling.
- If there is a low risk then it is unlikely that your baby is affected. However, there is a very small chance of less than 1 in 10,000 that the abnormality might have been missed by the Harmony test.
What the Harmony Test Can’t Tell You
Although the Harmony test can provide valuable information, it is important to understand that it is a screening test not a diagnostic one. When considering the results you should remember that the test isn’t perfect so there is a chance they could be wrong. It is also important to understand that the Harmony test only screens for a limited number of genetic abnormalities. The Harmony test can’t tell you:
- Whether your baby is definitely affected by any abnormalities. Only an invasive test such as amniocentesis can do this, but there will be risks of complications including miscarriage if you have these to confirm the results of NIPT.
- If there is a risk of rare chromosomal or genetic abnormalities that weren’t screened for during the analysis.
- If your baby has any other health problems such as heart or brain abnormalities. It may be possible to detect these using ultrasound so it is important to attend your anomaly scan and any other ultrasounds even if you’ve had NIPT.