AFP (Alpha Fetoprotein) The alpha-fetoprotein or AFP blood test is used in two circumstances: in the follow-up of pregnancies in order to detect possible fetal malformations and when a patient presents signs which could be related to a cancer of unknown origin (weight loss, fatigue, unexplained fever, etc.). The elevation of alpha-fetoprotein, in this case, … Continue reading AFP Alpha Fetoprotein | Pregnancy and Tumor Marker Blood Test