Patient Education Resource · Houston Sleep Associates

Wondering If You Need a Sleep Apnea Test?

Many people live with sleep apnea for years before receiving a diagnosis. Understanding the testing process can be the first step toward better sleep and improved health.

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Quick Answer

A sleep apnea test measures your breathing, oxygen levels, and sleep patterns overnight to determine whether obstructive sleep apnea is present and how severe it is. Many patients qualify for a convenient home sleep test rather than an overnight lab stay.

What Is a Sleep Apnea Test?

A sleep apnea test — also called a sleep study or polysomnography — is a diagnostic evaluation that monitors your body's activity during sleep to identify breathing disturbances, oxygen level changes, and sleep stage disruptions associated with obstructive sleep apnea.

The test generates an apnea-hypopnea index (AHI) — a measure of the number of breathing events per hour of sleep — which is used to determine whether sleep apnea is present and classify its severity as mild, moderate, or severe. This diagnosis is the required foundation for beginning treatment.

Signs You May Need Testing

A sleep apnea evaluation is appropriate if you experience one or more of the following:

  • Loud or chronic snoring reported by a partner
  • Excessive daytime fatigue that does not resolve with rest
  • Morning headaches that improve through the day
  • Waking up gasping or choking during the night
  • Witnessed pauses in breathing during sleep
  • Difficulty concentrating or unexplained brain fog
  • High blood pressure that is difficult to control

Types of Sleep Testing

Home Sleep Test (HST)

A portable monitoring device worn at home overnight. Measures airflow, respiratory effort, oxygen levels, and heart rate. Convenient, cost-effective, and appropriate for many patients with suspected obstructive sleep apnea.

In-Lab Polysomnography

A comprehensive overnight study conducted at a sleep center. Monitors brain waves, eye movements, muscle activity, and breathing in addition to respiratory parameters. Recommended for complex cases or when home testing is inconclusive.

What Happens After Diagnosis?

A sleep apnea diagnosis is the starting point — not the end point. Once your results are reviewed by a physician, the next step is discussing treatment options appropriate for your severity level, anatomy, and lifestyle.

Treatment options include CPAP therapy, oral appliance therapy, positional therapy, and in select cases surgical intervention. Many patients with mild to moderate sleep apnea — or those who cannot tolerate CPAP — are excellent candidates for oral appliance therapy.

Treatment Options Available

Following a diagnosis, Houston Sleep Associates can discuss treatment options including:

  • Oral appliance therapy — a custom-fitted device worn during sleep, no mask or machine required
  • CPAP therapy — pressurized air delivered through a mask to keep the airway open
  • Combination therapy — oral appliance used alongside CPAP for improved outcomes
  • Lifestyle modifications — positional therapy and weight management where applicable

Explore CPAP alternatives and dental sleep medicine options on our dedicated pages.

Take the First Step Toward a Diagnosis

Take the sleep apnea assessment or schedule a consultation with Houston Sleep Associates today.

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Frequently Asked Questions

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Houston Sleep Associates serves patients throughout Houston, River Oaks, West University, Bellaire, Upper Kirby, and surrounding communities.

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