Sleep Studies: What to Expect, Preparation & Results

What It Is

A sleep study (polysomnography) is an overnight test that records your brain waves, oxygen levels, heart rate, breathing, and body movements during sleep. It is the gold standard for diagnosing sleep disorders including sleep apnea, narcolepsy, restless leg syndrome, and other conditions.

Who It Helps

Sleep studies help people with suspected sleep apnea, excessive daytime sleepiness, loud snoring, insomnia unresponsive to treatment, unusual sleep behaviors, and anyone whose doctor suspects a sleep disorder.

What to Expect

You arrive at a sleep center in the evening, and a technician attaches painless sensors to your head, face, chest, and legs. You sleep in a private room that resembles a hotel room. The test records data throughout the night. Results are interpreted by a sleep specialist. Home sleep tests are also available for suspected sleep apnea.

Cost Range

Typical Duration

One overnight session (in-lab) or 1-3 nights (home test)

Frequently Asked Questions

Can you actually sleep during a sleep study?

Yes, most people do sleep during the study. It may take longer to fall asleep than usual due to the unfamiliar environment and sensors, but technicians are trained to help you feel comfortable. You don't need a perfect night's sleep for useful results.

What is a home sleep test?

A home sleep test is a simplified version that monitors breathing, oxygen, and heart rate. It is used primarily for diagnosing obstructive sleep apnea. It is less comprehensive than in-lab testing but more convenient and affordable.

How long do sleep study results take?

Results are typically available within 1-2 weeks. A sleep specialist interprets the data and provides a diagnosis and treatment recommendations. Follow-up appointments discuss the findings and next steps.

Do I need a referral for a sleep study?

Most insurance plans and sleep centers require a referral from your doctor. Your primary care doctor can order a sleep study based on your symptoms.

How much does a sleep study cost?

In-lab sleep studies cost $1,000-$5,000 without insurance. Home sleep tests cost $200-$500. Most insurance covers sleep studies with a doctor's order. Copays vary. OpenMyPro helps you find affordable sleep centers.

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