Home Sleep Test

A home sleep test (HST) is a diagnostic tool that allows you to be screened for obstructive sleep apnea in the comfort of your own home. Instead of spending a night at a sleep lab, you take a small device home, attach the sensors before bed, and sleep normally. The device records key breathing signals overnight, and the data is reviewed by a physician.

Home sleep tests are also referred to as at-home sleep apnea tests or portable sleep monitoring. They are specifically designed to detect obstructive sleep apnea — the most common type of sleep-disordered breathing, where the airway repeatedly collapses during sleep.

The device typically includes a small chest belt to measure breathing effort, a nasal cannula to measure airflow, a finger clip to measure oxygen saturation, and sometimes an additional sensor for heart rate or sleeping position. Most devices are compact and designed to be comfortable enough for normal sleep.

Home sleep testing is appropriate for adults who have a moderate to high likelihood of having obstructive sleep apnea. Common qualifying factors include:

• Loud, persistent snoring reported by a bed partner
• Witnessed breathing pauses during sleep
• Excessive daytime sleepiness or fatigue
• Morning headaches on multiple days per week
• A body mass index (BMI) in the overweight or obese range
• High blood pressure that is difficult to control
• A neck circumference greater than 17 inches (men) or 16 inches (women)

Home sleep testing may not be appropriate for patients with certain medical conditions, including moderate to severe congestive heart failure, significant lung disease like COPD, neuromuscular disorders affecting breathing, or when sleep disorders other than OSA (such as narcolepsy or restless legs syndrome) are suspected. In these cases, an in-lab polysomnography is typically recommended.

Home sleep tests offer several practical benefits over in-lab studies, which is why they have become the preferred first-line testing method for most patients with suspected OSA:

• Comfort and familiarity: You sleep in your own bed, in your normal sleeping environment. This typically produces more natural sleep than a lab setting.
• Convenience: No need to travel to a sleep lab or spend the night away from home. The device is picked up or shipped to you and returned by mail or drop-off.
• Lower cost: Home sleep tests typically cost significantly less than in-lab polysomnography, and insurance copays are generally lower.
• Faster scheduling: Home tests can often be scheduled within days, while in-lab studies may have wait times of several weeks.
• Simplicity: Most devices have only three to four sensors that can be attached in under five minutes with minimal instruction.

While home sleep tests are effective for most patients, they do have important limitations that patients should understand:

• Fewer monitored signals: Home tests do not measure brain waves (EEG), eye movements, or muscle activity. This means they cannot determine sleep stages or confirm whether you were actually asleep during the recording.
• Potential for underestimation: Because the device cannot confirm sleep, if you spend time awake in bed but not sleeping, the denominator (total sleep time) may be overestimated, which can lower the calculated AHI and understate severity.
• Risk of sensor displacement: If a sensor shifts or falls off during the night, some data may be lost. This is uncommon but can result in the need to repeat the test.
• Limited to OSA screening: Home sleep tests are designed to detect obstructive sleep apnea only. They cannot diagnose other sleep disorders that require comprehensive in-lab monitoring.

Home sleep tests have been extensively studied and validated against in-lab polysomnography, which is considered the gold standard. Research shows that for detecting moderate to severe obstructive sleep apnea, home sleep tests have a sensitivity of approximately 80–90%.

This means that home sleep tests correctly identify the vast majority of patients with significant sleep apnea. However, because they monitor fewer signals and cannot confirm actual sleep time, they may occasionally underestimate severity — particularly in mild cases where the AHI is near the diagnostic threshold of 5 events per hour.

If a home sleep test is negative but symptoms strongly suggest sleep apnea, an in-lab study may be recommended to rule out a false negative. Learn more about how the two testing methods compare on our sleep study vs home sleep test page.

After you complete the home sleep test, the device is returned and the recorded data is uploaded for analysis. A qualified physician — typically a sleep medicine specialist — reviews the raw data and generates a formal report.

The report includes your apnea-hypopnea index (AHI), which is the average number of breathing pauses or reductions per hour of sleep. An AHI below 5 is considered normal, 5–14 is mild, 15–29 is moderate, and 30 or above is severe obstructive sleep apnea. The report also includes your lowest oxygen saturation level and other relevant measurements.

Once the diagnosis is confirmed, your provider will discuss treatment options. For patients with mild to moderate sleep apnea, oral appliance therapy is often recommended. For severe cases, CPAP is typically the first-line treatment, though oral appliances may be an option for patients who cannot tolerate CPAP. Learn more about the diagnostic process and understanding your results.