What is a Non stress test during pregnancy?

A non stress test is a monitoring test that is used sometimes during pregnancy. Usually used in the later part of pregnancy,or if there is a complication such a Gestational Diabetes, the test is used to monitor who the baby is doing inside the mothers uterus.

The test involves putting a monitor on the outside of the woman and measuring the heart rate and movement of the baby. Below is a small write up on what the test involves.

"If your baby's heart beats faster (at least 15 beats per minute over his resting rate) while he's moving for at least 15 seconds on two separate occasions during a 20-minute span, the result is normal, or "reactive." A normal result means that your baby is probably doing fine for now. Your practitioner may want to repeat the test every week (or more often) until your baby's born." Taken from babycenter.com