Elevated AFP levels may indicate neural tube defects (such as spina bifida or anencephaly), abdominal wall defects, twin pregnancy, or an incorrectly estimated gestational age.
Lower than normal levels may indicate Down syndrome (trisomy 21) or Edwards syndrome (trisomy 18).
It is a screening test, not a diagnostic one. A positive screen does not mean a definite abnormality; further diagnostics, such as an ultrasound or amniocentesis, are usually required. 2. Alpha-Fetoprotein (AFP) as a Tumor Marker Alpha-Fetoprotein (AFP) Test: MedlinePlus Medical Test
1. Alpha-Fetoprotein (AFP) in Pregnancy (Prenatal Screening)
Alpha-fetoprotein (AFP) is a protein produced primarily by the liver and yolk sac of a developing fetus during pregnancy. While levels are high in fetuses and decrease significantly by age 1, AFP testing is used in two distinct medical contexts: prenatal screening and tumor marker monitoring.
The maternal serum AFP (MSAFP) test is a blood test performed during the second trimester (typically between 15 and 20 weeks) to assess the risk of fetal abnormalities.
Alpha Fetoprotein Here
Elevated AFP levels may indicate neural tube defects (such as spina bifida or anencephaly), abdominal wall defects, twin pregnancy, or an incorrectly estimated gestational age.
Lower than normal levels may indicate Down syndrome (trisomy 21) or Edwards syndrome (trisomy 18). alpha fetoprotein
It is a screening test, not a diagnostic one. A positive screen does not mean a definite abnormality; further diagnostics, such as an ultrasound or amniocentesis, are usually required. 2. Alpha-Fetoprotein (AFP) as a Tumor Marker Alpha-Fetoprotein (AFP) Test: MedlinePlus Medical Test Elevated AFP levels may indicate neural tube defects
1. Alpha-Fetoprotein (AFP) in Pregnancy (Prenatal Screening) A positive screen does not mean a definite
Alpha-fetoprotein (AFP) is a protein produced primarily by the liver and yolk sac of a developing fetus during pregnancy. While levels are high in fetuses and decrease significantly by age 1, AFP testing is used in two distinct medical contexts: prenatal screening and tumor marker monitoring.
The maternal serum AFP (MSAFP) test is a blood test performed during the second trimester (typically between 15 and 20 weeks) to assess the risk of fetal abnormalities.