What is one purpose of the triple screen test during pregnancy?

The triple screen test, also known as the triple marker test, is a blood test performed during the second trimester of pregnancy. One of its primary purposes is to assess the levels of certain substances in the mother’s blood, specifically alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG), and estriol. The results of this test can help to indicate the risk of certain chromosomal abnormalities, including Down syndrome (trisomy 21).

The significance of the test lies in its ability to identify pregnancies that may be at higher risk for this genetic condition, allowing for further diagnostic testing if indicated. This proactive approach assists in managing the pregnancy by giving parents options and information regarding potential genetic issues.

In contrast, other options provide different functions unrelated to the primary purpose of the triple screen test: confirming pregnancy is typically done through other methods such as urine tests or early blood tests; screening for gestational diabetes is performed through glucose screening tests; and determining fetal weight usually occurs through ultrasound assessments rather than a blood test like the triple screen.