When is an NST performed? NSTs are generally performed after 28 weeks of gestation. Before 28 weeks, the fetus is not developed enough to respond to the test protocol.

How early can you do NST?

Typically, a nonstress test is recommended when it's believed that the baby is at an increased risk of death. A nonstress test may be done after 26 to 28 weeks of pregnancy.

Does everyone get a NST during pregnancy?

NST is a common test for pregnant women. Your doctor may use it to check the health of your baby after weeks 26 to 28 of pregnancy. Certain results may mean your doctor needs to monitor your baby, do more tests, or schedule delivery.