Alpha - Fetoprotein

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.

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 alpha fetoprotein

Lower than normal levels may indicate Down syndrome (trisomy 21) or Edwards syndrome (trisomy 18). The maternal serum AFP (MSAFP) test is a