"Sleep study" means two different things, and people mix them up all the time. Most of the time it is a medical test your doctor orders because something seems wrong with your sleep. But it can also mean a research study, where scientists learn how sleep works, and some of those pay you for your time. This guide covers both: what happens during a sleep study, lab or home, what it can find, what it costs, and how paid research sleep studies work and who can join. Sleep research has also had two remarkable years, and we get to that too.
What is a sleep study?
A sleep study is a painless test that records what your body does while you sleep. The full version is called polysomnography, a name coined in the 1970s when sleep scientists bundled several tests into one night. It records your brain waves, heart rate, and breathing, tracks your eye, leg, and arm movements, and measures the oxygen in your blood. From that, a sleep doctor can see how long you slept, how often you woke up, which sleep stages you reached, and whether your breathing stopped or your legs kept moving.
There are a few related tests you may also hear about. A multiple sleep latency test measures how fast you fall asleep during a series of daytime naps, and it is one of the main tests for narcolepsy. A maintenance of wakefulness test does the opposite and measures how well you can stay awake. And activity monitors, usually worn on the wrist, track sleep at home for several days or even weeks.
How does a sleep study work? What happens during the night
Arrival. For a lab study you usually arrive in the evening, a couple of hours before your normal bedtime. The room is usually set up more like a bedroom than a hospital room.
The sensors. A technologist attaches small sensors to your scalp, face, chest, and legs with adhesive or paste, plus a clip on your finger for oxygen and belts around your chest and belly for breathing. The wires are long enough for you to turn over in bed. Tell them if you are sensitive to adhesives.
The check. Before lights out you will be asked to move your eyes, clench your teeth, and move your legs, so the team can see that every sensor works.
The night. When it is time to sleep, the lights go off and a low light camera lets the technologist see you from a nearby room. The camera is mostly there so the team can check what was happening if the readings look unusual, not to watch you all night. If a sensor comes loose, the technologist will come and fix it.
The morning. The sensors come off and you usually go home. Some people stay for a multiple sleep latency test the next day, with five scheduled naps two hours apart. A sleep doctor reads the recording, and the results go to the doctor who ordered the test.
In lab sleep study or at home sleep study?
Many people today do not need a night in a lab. For adults whose doctor suspects moderate to severe obstructive sleep apnea without other complications, a home sleep apnea test is often enough. You wear a smaller device overnight in your own bed, it records fewer signals, mainly breathing and oxygen, and it is more convenient. It may also cost less. Home testing is especially useful in places where there is no sleep clinic nearby.
But a home test cannot do everything. The American Academy of Sleep Medicine recommends a full lab study instead for people with significant heart or lung disease, conditions that weaken the breathing muscles, long term opioid use, a history of stroke, or severe insomnia. Home tests also cannot diagnose narcolepsy, and if a home test comes back negative but the symptoms continue, the next step is usually a lab study. A sleep apnea diagnosis can start at home. A narcolepsy diagnosis starts in a sleep lab.
What can a sleep study diagnose?
Sleep studies help diagnose sleep related breathing disorders such as sleep apnea, sleep related seizures, movement disorders during sleep, and conditions that cause extreme daytime sleepiness such as narcolepsy. They are also used for REM sleep behavior disorder, where people act out their dreams, for sleepwalking and other parasomnias, and for long lasting insomnia that has no clear explanation.
Obstructive sleep apnea is by far the most common reason. A widely cited 2019 analysis in The Lancet Respiratory Medicine estimated that about 54 million US adults aged 30 to 69 have it, and a 2025 study in the same journal projected 76.6 million by 2050. Narcolepsy type 1 is much rarer, affecting about 1 in 2,000 people in the United States according to the FDA, and it is often underdiagnosed.
How to get a sleep study, and how much it costs
A diagnostic sleep study starts with your doctor. They ask about your symptoms, often snoring, gasping at night, daytime sleepiness, or trouble sleeping, and then order either a home test or a lab study. Some people are referred to a sleep specialist first.
Cost depends on the type of test and your insurance. A home test usually costs less than a night in a lab, and for suspected sleep apnea it is often the first step. Medicare has covered sleep testing for suspected obstructive sleep apnea since 2009, both lab studies and certain home devices, when a doctor orders it based on symptoms. For private insurance, call your plan and ask what is covered and whether you need approval in advance.
Research sleep studies are different: they are part of a research plan, and you are never asked to pay to take part. Our guide to what clinical trials cost explains who pays for what.
Sleep research is having a moment
If it feels like sleep is suddenly in the news, it is. Three things happened in the past two years, and all of them came out of sleep studies and clinical trials.
A Lasker Award for orexin. In 1998, two research teams published, two weeks apart, the discovery of orexin, a brain chemical that keeps us awake, and showed that losing it causes narcolepsy. Masashi Yanagisawa did his part of the work at UT Southwestern in Dallas, and Emmanuel Mignot at Stanford traced inherited narcolepsy in dogs to the same pathway. In September 2026 both received the Albert Lasker Basic Medical Research Award. Several insomnia medicines that block orexin are already on the market. Dallas, by the way, has a long record of prize winning research, which our Dallas clinical trials guide covers.
The first drug that treats narcolepsy type 1 as a whole. On August 5, 2026 the FDA approved oveporexton (Orzeyful), a twice daily pill that activates orexin receptors instead of working around the missing chemical. The FDA called it the first medicine that affects the underlying biology of the disease. It was tested in two randomized, placebo controlled trials in 273 adults, and people taking it were better able to stay awake during the day and had fewer episodes of sudden muscle weakness. Our narcolepsy treatment guide covers what else is approved and in trials.
Sleep apnea finally has medicines. For decades the main treatments were breathing machines, mouth devices, and surgery. On December 20, 2024 the FDA approved tirzepatide (Zepbound) as the first medicine for moderate to severe obstructive sleep apnea in adults with obesity, after two trials in 469 adults. The main result, how many times per hour breathing stopped or became shallow, was measured with sleep studies. In July 2026 the FDA accepted an application for AD109 from Apnimed, a once nightly pill aimed at the airway muscles that collapse during sleep. It is still investigational, and the FDA's decision date is February 28, 2027. See our weight loss treatment trials and obstructive sleep apnea clinical trials pages for studies recruiting now.
Why sleep researchers need people who sleep well
Paid sleep studies exist because of a simple problem. In 2024 about 30 percent of US adults slept less than 7 hours a night, and the American Academy of Sleep Medicine recommends at least 7. Short sleep is linked with obesity, diabetes, heart disease, and depression. But a link is not proof, and to know what sleep loss actually does, researchers have to change sleep on purpose, under close watch, in people who normally sleep well.
That kind of research has a long history. One of the most famous sleep lab discoveries came in 1953, when Eugene Aserinsky and Nathaniel Kleitman at the University of Chicago published in the journal Science that sleep has recurring periods of rapid eye movements, later called REM sleep, after recording 20 adults through the night. And in 1999 another University of Chicago team led by Eve Van Cauter showed that six nights of short sleep made healthy young men handle blood sugar in a way that looked like early diabetes. Studies like these are why many paid sleep studies today look for healthy volunteers.
Types of paid sleep studies
Sleep restriction studies. You sleep less than usual for several nights, and researchers measure blood pressure, blood sugar, mood, or memory. One recruiting now at Mayo Clinic in Rochester compares young adults whose parents have high blood pressure with those whose parents do not.
Body clock studies. These look at the circadian rhythm, the internal clock that runs on a roughly 24 hour cycle. A study at the Sleep and Chronobiology Laboratory in Boulder, Colorado uses simulated jet lag to learn how clocks in different parts of the body shift.
Sleep and metabolism studies. How sleep loss and the timing of sleep change the way the body burns energy and handles sugar. These often involve longer stays in a lab.
Sleep and food studies. Whether a food or drink changes sleep. Columbia University in New York is testing pistachios in adults 45 to 64, and Mayo Clinic is testing beetroot juice.
Meal timing studies. Some studies test when people eat, not only how they sleep, because the body clock also responds to meals. A University of Kentucky study is testing time restricted eating in women after menopause.
What happens in a research sleep lab
Before the lab. Many studies ask you to keep a regular sleep schedule at home for a week or more before you come in, sometimes with a wrist tracker and a sleep diary, so everyone starts from the same point.
The stay. The sensors are the same kind used in a clinical sleep study, but the stay can be much longer. Some studies are one or two nights. Others last weeks: one recruiting study at Oregon Health and Science University runs 21 days, including 14 living in the lab.
The rules. Bed and wake times are set by the study, and caffeine, alcohol, and naps are usually not allowed. Meals may be planned in advance, some studies take blood samples to measure hormones or sugar, and body clock studies may control the light and hide the time of day.
How it feels. Sleep restriction makes you tired, slower, and sometimes moody, which is exactly what is being measured. Ask the team how you will get home afterward, because driving after sleep loss is not safe.
Who can join a paid sleep study
Many studies look for adults in their 20s or 30s who sleep a normal amount on a regular schedule and have no sleep disorder, but some want middle aged or older adults, like the pistachio study at 45 to 64. They usually exclude people who work night shifts, unless the study is about shift work, take sleep medicines, drink a lot of caffeine, or smoke, and many have a BMI range. People who already have a sleep disorder are not left out of research, they just join different studies: see our sleep disorder clinical trials, insomnia, and narcolepsy pages. Eligibility always varies by study.
Do sleep studies pay?
A diagnostic sleep study does not pay you, it is a medical test. Research sleep studies are different. Some studies offer compensation for time and travel, and study related tests and visits are typically provided at no cost to participants. Compensation varies by trial and is always described during the informed consent process before you agree to anything. Under FDA guidance, payment should build up as the study goes, so if you leave early you are normally paid for the part you completed, and the ethics board reviews whether the payment plan is fair. Our guide to how much clinical trials pay explains what affects it.
How to find a paid sleep study near you
Sleep studies that accept healthy volunteers are listed on our healthy volunteers page, and you can also search by city. Two recruiting right now show the range. A study at Oregon Health and Science University looks at how short sleep and body clock timing affect metabolism, for adults 18 to 40, with 21 days of participation including 14 days in the lab; see more studies in Portland. A study at Mayo Clinic tests partial sleep loss in adults 18 to 35; see more studies in Rochester, Minnesota. Check the details to see if you qualify, and the application takes about 5 minutes.
Common questions
What if I can't sleep during a sleep study? Most people sleep less than usual in a lab because of the sensors and the new room, and this usually does not affect the results. Nearly everyone falls asleep at some point. If you are worried, tell the doctor who ordered the test beforehand.
How long does a sleep study take? A lab study usually runs from the evening until the next morning. If you also have a multiple sleep latency test, you stay much of the next day for five naps two hours apart. Research sleep studies can last from one night to several weeks.
Can someone stay with you during a sleep study? Usually not; people sleep alone in the room. Labs make exceptions when a caregiver is needed, for example for a child or someone who needs help, and the caregiver usually stays in a separate room. Ask the lab in advance.
Can you watch TV during a sleep study? In most labs you can read or watch TV until your normal bedtime. Once the lights go off, screens are off too.
What should I bring to a sleep study? Comfortable clothes to sleep in, anything you need for your bedtime routine, and your usual medicines, unless the lab tells you otherwise. Ask before taking any sleep medicine that night, and avoid alcohol and caffeine if you were told to.
What is Polysomnography? Polysomnography is the full overnight recording of sleep with sensors for brain waves, breathing, heart, eyes, and muscles. It is used both in clinical tests and in research.
How long does it take to get sleep study results? A sleep doctor has to review hours of recording, so results are not ready the same morning. The doctor who ordered the test goes over them with you, and the timing depends on the clinic, so ask when and how you will get them.
Can you get paid for a sleep study? Some research sleep studies offer compensation for time and travel, always explained during informed consent before you agree to anything.
See healthy volunteer clinical trials recruiting now
Browse open studies, filter by location, and apply in about 5 minutes: Healthy Volunteer Clinical Trials