Beaumont Hospital - Farmington Hills
28050 Grand River Ave.
Farmington Hills, MI 48336-5919
(248) 471-8000
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Health Information

Nonstress and Contraction Stress Tests

Pregnant woman lying on exam table with straps around belly. Straps are connected to machine.

Nonstress and contraction stress testing is a simple way to check the well-being of your baby. The tests let your healthcare provider know whether it is best to deliver your baby right away, or to wait.

Be sure to talk to your healthcare provider if you have questions about these procedures.

What to expect during your test

Nonstress test

A nonstress test (NST) allows your healthcare provider to monitor your baby’s heartbeat. If the heartbeat increases normally during the test, it means that your baby is probably getting enough oxygen and nutrients from your blood.

Contraction stress test

The contraction stress test (CST) tells your healthcare provider whether your baby’s heartbeat is reacting normally during mild, labor-like contractions. This offers a preview of how well your baby will withstand the stress of labor.

During CST

To stimulate mild contractions in your uterus, your healthcare provider will give you an IV medicine. Oxytocin is almost always used.