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Overnight Sleep Lab Instructions – MSLT

What Is An MSLT (Multiple Sleep Latency Test)?

The MSLT is a daytime sleep study involving a series of several nap opportunities spaced throughout the day. The purpose of the test is to identify people who are unusually drowsy during the day despite getting adequate sleep.  It is performed in conjunction with an overnight sleep study (usually always the night before the MSLT).  Depending on what we observe during the overnight portion, we will usually proceed with the MSLT.