RisksBy Mayo Clinic staff
A nonstress test is a noninvasive test that poses no physical risks for you or your baby.
While a nonstress test can offer reassurance about your baby's health, it can cause anxiety. A nonstress test also might not detect an existing problem or might suggest that a problem exists when there is none.
Also, keep in mind that while a nonstress test is often recommended for women who have an increased risk of pregnancy loss, it's not always clear if the test is helpful.
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