Setting up a sleep study starts with your primary care doctor or a sleep specialist, who writes a referral and orders the test. From there, the sleep center and your insurance company coordinate authorization before you’re scheduled. The whole process typically involves a few key steps: getting the referral, choosing between a home or lab study, preparing for the night, and waiting for results.
Getting the Referral
You can’t schedule a sleep study on your own. A physician needs to place an order for the test, and most insurance companies require that referral before they’ll cover it. Your starting point is usually your primary care doctor, though any treating physician can make the referral.
At your appointment, expect to discuss your specific sleep symptoms, why a study is needed, and any other health conditions you have. Your doctor will document all of this because the sleep center and your insurance company both require that medical history to move forward. If the documentation is thin, insurance will often deny an in-lab study and recommend a cheaper home test instead. In some cases, your doctor may need to do a peer-to-peer call with the insurance company’s medical reviewer to justify the overnight lab option.
Your doctor may also use a screening questionnaire to gauge your risk level. One common tool asks eight yes-or-no questions about snoring, fatigue, observed pauses in breathing, high blood pressure, BMI, neck size, age, and sex. A score of 5 or higher flags you as high risk for obstructive sleep apnea and can help prioritize your case for testing.
Home Test vs. In-Lab Study
There are two main options, and the choice depends on what your doctor suspects and what your insurance approves.
A home sleep apnea test is a simplified version you do in your own bed. It typically monitors your breathing, airflow, and blood oxygen levels using a small portable device. Home tests cost between $150 and $1,000, making them significantly cheaper than lab studies. They work well for straightforward cases of suspected obstructive sleep apnea in otherwise healthy adults. The tradeoff is that they’re less thorough. If a home test comes back negative but you’re still having symptoms, the American Academy of Sleep Medicine recommends following up with an in-lab study to rule out sleep apnea more definitively.
An in-lab polysomnography is the gold standard. It records far more data: brain wave activity, eye movements, heart rhythm, chin and leg muscle activity, airflow through your nose and mouth, chest and abdominal movement, blood oxygen levels, body position, and even snoring. The average cost is around $3,000, though prices range from $1,000 to over $10,000 depending on your location and insurance. Medicare covers in-lab studies when ordered by a doctor and performed in a certified sleep lab facility, as long as you have clinical signs and symptoms of sleep apnea.
Your doctor will typically recommend the in-lab option if you have heart rhythm concerns, advanced heart or lung disease, suspected breathing problems beyond simple apnea (like low oxygen or high carbon dioxide during sleep), or if a home test didn’t give clear answers.
What Insurance Needs From You
Once your doctor submits the referral, the sleep center handles the insurance authorization process. They’ll submit your referral forms along with your medical records documenting your symptoms and the clinical reason for the study. You generally don’t need to do anything during this step, but it can take days to weeks depending on your insurer.
If you have Medicare, both home and lab-based studies are covered as long as your doctor has ordered the test and documented clinical signs of sleep apnea. Private insurers vary, but nearly all require prior authorization and documented medical necessity. Call your insurance company ahead of time to ask about your specific plan’s requirements and your expected out-of-pocket cost.
Preparing for the Night
Preparation is simple but specific. On the day of your study, wash your hair in the morning and skip any hair products afterward, including gel, mousse, or hairspray. The technician needs to attach small sensors to your scalp, and product residue interferes with the signal.
Avoid caffeine in the afternoon and evening before the study. That includes coffee, tea, cola, and chocolate. Skip alcohol entirely that day. Continue taking your regular medications unless your sleep doctor specifically tells you to stop something, and bring a written list of everything you take to hand to the technician when you arrive.
For an overnight lab study, pack as if you’re spending one night at a basic hotel. Bring comfortable pajamas (avoid one-piece footed sleepwear, since sensors need access to your legs and chest), your own pillow or blanket if that helps you sleep, toiletries for the morning, and a change of clothes. The sleep center provides linens. If you take nighttime medications, bring those with you.
What Happens During an In-Lab Study
You’ll arrive at the sleep center in the evening, usually between 7 and 9 p.m. A technician will walk you to a private room that looks more like a basic hotel room than a hospital ward. You’ll change into your pajamas, and then the setup begins.
The technician attaches a series of small sensors to your body. Electrodes go on your scalp to track brain waves and identify sleep stages. Sensors near your eyes detect eye movements, which help distinguish REM sleep from other stages. Electrodes on your chin and lower legs monitor muscle activity. A small clip goes on your finger to measure blood oxygen, and elastic belts wrap around your chest and abdomen to track breathing effort. A small sensor sits near your nose and mouth to measure airflow, and a microphone on your neck detects snoring. An electrode on your chest records your heart rhythm throughout the night.
It sounds like a lot of wires, but the sensors are all surface-level. Nothing punctures your skin. You can still roll over and shift positions. The technician monitors everything from a separate room and can communicate with you through an intercom if needed. Most people do manage to fall asleep, even if it takes longer than usual. The study typically runs until around 6 a.m., when the technician removes the sensors and you’re free to go.
What Happens With a Home Test
If you’re doing a home sleep apnea test, the sleep center or your doctor’s office will give you a portable device with instructions. The setup is much simpler: usually a nasal airflow sensor, a finger clip for oxygen levels, and a belt or sensor to track breathing effort. You put it on at bedtime, sleep in your own bed, and return the device the next day or ship it back. The same preparation rules apply for caffeine, alcohol, and hair products if any sensors attach to your head.
Getting Your Results
After your study, a sleep specialist reviews the recorded data. For an in-lab study, that means analyzing hundreds of pages of signals covering every sleep stage, breathing event, oxygen dip, heart rhythm change, and leg movement throughout the night. A provider should reach out within a few days with preliminary results, though turnaround varies by facility. In most cases, your doctor will discuss the full results and any treatment recommendations at a follow-up appointment.
If the study reveals obstructive sleep apnea, you may be asked to come back for a second night (called a titration study) where the technician fits you with a CPAP mask and adjusts the air pressure while you sleep to find the right setting. Some labs do a “split night” study, where they diagnose apnea in the first half and start CPAP titration in the second half, saving you a return trip.
If your results are inconclusive or your home test came back normal but symptoms persist, your doctor may order an in-lab study to get a more complete picture. The full polysomnography can detect conditions a home test simply can’t, including central sleep apnea, sleep-related movement disorders, and nighttime heart rhythm abnormalities.