Multiple Sleep Latency Test (MSLT)Also called a “Nap Test”, the multiple sleep latency test (MSLT) is the standard way to quantify sleepiness and diagnose disorders of excessive sleepiness. An overnight diagnostic sleep test called a polysomnogram (PSG) is required the night prior to the daytime MSLT. After the PSG is complete, a series of nap tests are spread out over the following day. |





