URMC / Encyclopedia / Content Search Encyclopedia Maternal and Fetal Testing To evaluate the health of a pregnancy and fetus, many types of prenatal tests may be performed. Listed in the directory below are some, for which we have provided a brief overview. Maternal and Fetal Testing Overview First Trimester Screening Second Trimester Screening Alpha-fetoprotein (AFP) Ultrasound Chorionic Villus Sampling Amniocentesis Fetal Blood Sampling Fetal Monitoring Fetal Movement Counting Nonstress Testing (NST) Biophysical Profile (BPP) Doppler Flow Studies