When OSA is suspected, a physician will first inquire about any history of snoring or typical symptoms such as daytime sleepiness. A medical exam of the neck, mouth, and throat will also be performed to examine the airway. Screening tools such as the STOP-Bang questionnaire and the Epworth Sleepiness Scale (ESS) may be used to determine a person’s risk for OSA.[1] The only way to confirm a diagnosis of OSA is by conducting a polysomnography (sleep study) test, which measures sleep stages and cycles.[2]
How is obstructive sleep apnea diagnosed?
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•Last Updated: May 16, 2025
Obstructive sleep apnea is diagnosed through a physician's inquiry about symptoms like snoring and daytime sleepiness, along with a medical exam of the airway and the use of screening tools such as the STOP-Bang questionnaire and the Epworth Sleepiness Scale. The definitive diagnosis is confirmed by conducting a polysomnography (sleep study) test that measures sleep stages and cycles.