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What is the difference between a prenatal screening test and a prenatal diagnostic test?

A diagnostic test is a test that determines whether a condition is present with 100% accuracy.
The two main diagnostic tests that are used to diagnose genetic conditions prenatally are amniocentesis and chorionic villus sampling. There is a small risk of complications with diagnostic tests, including miscarriage.

A screening test looks at the risk of whether a condition is present. It does not give a definite ‘yes’ or ‘no’ answer. There are no health complications with screening tests and they do not increase your risk of miscarriage.

The NIFTY® test is a screening test with a detection rate of 99.5%* for the three most commonly occurring ‘trisomy’ conditions present at birth which are: Down Syndrome, Edwards Syndrome and Patau Syndrome.

* Please see the Clinical Data page within www.niftytest.com if you would like to view the externally validated data supporting this figure.