Is a home sleep test accurate?

Home testing offers good screening value for higher-risk patients but monitors fewer channels; if results are unclear or suspicion is high, a physician may recommend in-lab PSG.

What AHI needs treatment?

Generally AHI 15+ (moderate or above), or 5–15 with symptoms or comorbidities, warrants active treatment. The exact threshold and method are determined by a physician.

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How Does a Home Sleep Test Work? Understanding AHI, the Testing Process, and Diagnosing Sleep Apnea

Name: How Does a Home Sleep Test Work? Understanding AHI, the Testing Process, and Diagnosing Sleep Apnea
Published: 2026-06-05

Medical Editorial Team · 2026-06-05 · Endorsed by Taipei Medical University cross-disciplinary team; recommended by Taiwan Dental Sleep Medicine Academy (TDSMA)

Sleep apnea is diagnosed mainly by a sleep study, in two forms: in-lab polysomnography (PSG) and home sleep apnea testing (HSAT). PSG monitors more channels (brain waves, breathing, oxygen, heart rate), while a home test is more convenient and worn at home, suitable for initial screening of higher-risk patients. The key metric is the Apnea–Hypopnea Index (AHI) — apnea/hypopnea events per hour: 5–15 mild, 15–30 moderate, over 30 severe. The exact test and diagnosis must be arranged and interpreted by a physician.

How AHI Grades Severity

AHI (events/hour)	Severity
Below 5	Normal range
5–15	Mild
15–30	Moderate
Over 30	Severe

Severity shapes treatment: for mild-to-moderate cases or CPAP-intolerant patients, an oral appliance (OAT) is a guideline-recognized option; severe cases usually center on CPAP, sometimes combined with others. For a comparison see oral appliance vs CPAP vs surgery. Use the self-check to gauge risk before arranging a formal study.

After Testing: Where Oral Appliance Therapy Fits

Once a sleep study confirms OSA and grades severity, the physician selects treatment for the individual. For mild-to-moderate cases, or those who cannot tolerate CPAP after diagnosis, an oral appliance is a common non-invasive alternative. Suitability and any combined therapy require an overall clinical assessment.

FAQ

Is a home sleep test accurate?: Home testing offers good screening value for higher-risk patients but monitors fewer channels; if results are unclear or suspicion is high, a physician may recommend in-lab PSG.
What AHI needs treatment?: Generally AHI 15+ (moderate or above), or 5–15 with symptoms or comorbidities, warrants active treatment. The exact threshold and method are determined by a physician.