Which factor may lead to abnormally elevated AFP levels?
a. Neural tube defects c. Obesity
b. Asian ethnicity d. Intrauterine growth retardation
A
Maternal serum–alpha-fetoprotein (MS-AFP) testing is a maternal serum screen for neural tube defects (elevated levels) and trisomy 21 (decreased levels) during the second trimester of pregnancy. Normal ranges have been identified for each week of pregnancy. The optimal time for testing is 16 to 18 weeks gestation. Asian ethnicity, obesity, and intrauterine growth retardation do not lead to abnormally elevated AFP levels.
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