The double marker test, conducted during the first trimester (typically between 9 and 13 weeks), is important for several reasons:
Screening for Chromosomal Abnormalities: It measures two specific substances in the mother's blood—human chorionic gonadotropin (hCG) and pregnancy-associated plasma protein-A (PAPP-A). Abnormal levels can indicate an increased risk of conditions like Down syndrome and trisomy 18.
Risk Assessment: The test helps estimate the risk of chromosomal abnormalities, allowing for informed decision-making regarding further testing or monitoring.
Combination with Other Tests: The double marker test is often used alongside the nuchal translucency (NT) scan for a more comprehensive risk assessment.
Early Detection: Identifying potential issues early in the pregnancy can lead to better management options and planning for the future.
Non-Invasive: As a blood test, it poses no risk to the fetus, making it a safer option compared to invasive tests like amniocentesis.
Keywords
13 weeks
blood test
Other Tests
Down syndrome
increased risk
invasive tests
Early Detection
Abnormal levels
several reasons
first trimester
potential issues
management options
double marker test
two specific substances
Chromosomal Abnormalities
human chorionic gonadotropin
comprehensive risk assessment
nuchal translucency (NT) scan
pregnancy-associated plasma protein-A
