Jefferson University Hospitals

Multiple Sleep Latency Testing

If you fall asleep frequently during the day, you may have narcolepsy. Daytime multiple sleep latency testing (MSLT) may be used to diagnosis this condition.

What Does Multiple Sleep Latency Testing Involve?

Sleep experts of the Jefferson Sleep Disorders Center use this test to see how quickly you fall asleep in quiet situations during the day as a way to measure your level of sleepiness and to make a diagnosis of narcolepsy. The MSLT consists of five nap opportunities with breaks lasting for 2 hours in between.

The daytime nap study is taken right after you do an overnight sleep study. Sensors are placed on your head, face, and chin. They send tiny electrical signals to a computer. The signals show when you are asleep and awake during the study. The brain-wave and eye-movement detectors show when you are in REM sleep. This is a stage of sleep where your eyes twitch and your brain waves are very active.

Count on the experts of our Center to help you get a good night's sleep.