The double marker test, also known as the dual marker test, is a prenatal screening test that helps assess the risk of certain chromosomal abnormalities in the fetus. It measures two specific substances in the mother's blood - beta-human chorionic gonadotropin (β-hCG) and pregnancy-associated plasma protein-A (PAPP-A). These markers, along with other factors like maternal age, are used to estimate the likelihood of Down syndrome or other genetic disorders in the baby.
The double marker test is typically recommended to be done between 9-13 weeks of pregnancy. It can provide valuable information about the risk level for chromosomal abnormalities, allowing parents to make informed decisions about further diagnostic tests or interventions if necessary.
It's important to note that the double marker test is not a definitive diagnosis but rather an indicator of potential risks. If the results indicate a higher risk, further testing such as amniocentesis or chorionic villus sampling may be suggested for confirmation.
Whether or not a woman should undergo this test depends on various factors including her age, family history, and personal preferences. While it is not mandatory for all pregnant women, healthcare providers may recommend it based on individual circumstances. It's always best to consult with your healthcare provider who can guide you on whether this test is appropriate for you and explain its benefits and limitations.