What is the prenatal triple-marker test?
The pre-natal triple-marker screen refers to a blood test that is offered to the pregnant woman between 15 and 20 weeks. The “triple” refers to three hormones that are measured in the mother’s bloodstream, and depending on the pattern, or the level of those hormones, a risk assessment is made to determine if she is at risk of having a child with Down Syndrome, Spina Bifida (also known as neural tube defects), Trisomy 18, or the SLOS Syndrome.
