Decreased level of AFP during pregnancy indicate a risk of:

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Multiple Choice

Decreased level of AFP during pregnancy indicate a risk of:

Alpha-fetoprotein (AFP) in maternal serum comes from the fetus and rises with gestational age. When AFP is elevated, it points to neural tube or ventral wall defects due to leakage of fetal AFP into amniotic fluid and maternal blood. Conversely, a decreased AFP level is associated with an increased risk of Down syndrome (trisomy 21). In fetuses with Down syndrome, AFP production and placental handling differ, leading to lower-than-expected AFP in maternal blood. This finding is used as part of a broader screening panel during pregnancy; when AFP is decreased, the overall risk for Down syndrome rises, especially if other markers show a Down syndrome pattern, prompting follow-up diagnostic testing such as fetal chromosomal analysis. It's important to remember that this is a screening indicator, not a diagnostic result.

Alpha-fetoprotein (AFP) in maternal serum comes from the fetus and rises with gestational age. When AFP is elevated, it points to neural tube or ventral wall defects due to leakage of fetal AFP into amniotic fluid and maternal blood. Conversely, a decreased AFP level is associated with an increased risk of Down syndrome (trisomy 21). In fetuses with Down syndrome, AFP production and placental handling differ, leading to lower-than-expected AFP in maternal blood. This finding is used as part of a broader screening panel during pregnancy; when AFP is decreased, the overall risk for Down syndrome rises, especially if other markers show a Down syndrome pattern, prompting follow-up diagnostic testing such as fetal chromosomal analysis. It's important to remember that this is a screening indicator, not a diagnostic result.

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