A nonstress test (NST) is a non-invasive test done to examine the fetal heart rate and response to fetal movement.
A reactive (normal) test is indicated by a FHR with a normal rate, moderate variability, and two accelerations (greater than or equal to 15 bpm for greater than or equal to 15 seconds) in 20 minutes.
To learn more, see our full article on nonstress and other diagnostic tests performed during pregnancy.
