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Diagnosis Pulmonology


To diagnose narcolepsy, your doctor will conduct a physical examination and ask about your medical history and symptoms. In addition, a number of tests are available to assist the diagnosis of narcolepsy:

  • PolysomnogramThese tests, performed in an overnight sleep laboratory, measure brain waves and body movements as well as your nerve and muscle function.
  • Multiple Sleep Latency Test (MSLT)This test measures the time it takes you to fall asleep and move into a deep sleep while taking several naps over a period of time.
  • Genetic Blood TestsThese tests check for specific antigens often found in people who have a genetic predisposition to narcolepsy.

UCSF Health medical specialists have reviewed this information. It is for educational purposes only and is not intended to replace the advice of your doctor or other health care provider. We encourage you to discuss any questions or concerns you may have with your provider.