The triple test is a blood test that you’ll be offered between 10 and 14 weeks of pregnancy to check whether the baby has any chromosomal abnormalities, including Down's syndrome, Edwards' syndrome and Patau's syndrome.
The screening is called the triple test because it measures three different components in a mother’s blood: hCG, AFP and UE3. Differing levels of these three substances can indicate the likelihood of chromosomal abnormalities.
It’s important to remember that the test only provides a risk score. It cannot tell you for sure whether your baby has Down's syndrome, Edwards' syndrome or Patau's syndrome.