A sleep study is a test that measures how well you sleep and checks for sleep problems. For some sleep studies, you stay overnight in a sleep lab at a hospital or sleep centre.
In other cases, your doctor can give you a portable sleep monitor to use at home, so you don’t have to spend the night in the sleep lab. But you should use a portable monitor only if:
Your doctor thinks you have a condition that makes you stop breathing for short periods while you are asleep, called “sleep apnoea.”
You do not have other serious medical problems, such as heart disease or lung disease.
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