Two Ways to Study Your Sleep
If you've been told you might have a sleep disorder — or if you've been snoring, feeling exhausted during the day, or waking up with headaches — a sleep study is often the next step. The good news is that there are two main options, and they're more different from each other than you might think.
Understanding what each one involves can help you have a more informed conversation with your doctor and know what to expect along the way.
What Is an In-Lab Sleep Study?
An in-lab sleep study, sometimes called a polysomnogram, takes place overnight at a dedicated sleep center or hospital. You check in during the evening, and a trained technician helps you get set up for the night.
During the study, sensors are attached to your scalp, face, chest, legs, and fingers. These sensors monitor a wide range of body functions, including:
- Brain wave activity
- Eye movements
- Heart rate and rhythm
- Muscle activity
- Breathing patterns and effort
- Blood oxygen levels
A technician monitors your sleep from another room throughout the night and can make real-time adjustments if needed. In some cases, if a sleep disorder is identified early in the night, the technician may begin what's called a split-night study, which includes fitting you with a CPAP mask to measure its effect during the same visit.
In-lab studies are typically recommended when a more complex sleep disorder is suspected, or when additional monitoring is needed beyond what a home test can capture.
What Is a Home Sleep Test?
A home sleep test (HST) lets you do exactly what it sounds like — study your sleep in the comfort of your own bed. You receive a small, portable device (usually by mail or pickup) that you wear overnight and return afterward.
The device typically measures:
- Airflow through the nose and mouth
- Blood oxygen saturation
- Breathing effort
- Heart rate
- Body position and movement
Setup is straightforward, and most devices come with simple instructions or a video walkthrough. You wear a few small sensors — usually a finger probe, a chest strap, and a nasal cannula — and sleep as you normally would. In the morning, you remove the device and return it so the data can be analyzed by a sleep specialist.
Home sleep tests are most commonly used to detect obstructive sleep apnea, which is one of the most frequently diagnosed sleep disorders. They're a great fit for people who are otherwise healthy and whose main symptoms point toward a breathing-related sleep issue.
Key Differences at a Glance
- Location: In-lab studies happen at a clinic; home tests happen in your own bedroom.
- Comfort: Many people find it easier to sleep in their own environment, which can make home tests feel more natural.
- What's measured: In-lab studies capture more data channels; home tests focus primarily on breathing and oxygen levels.
- Cost: Home sleep tests are generally less expensive and are often covered by insurance when medically appropriate.
- Turnaround: Results from home tests are often available within a few days of returning the device.
- Supervision: In-lab studies include a technician present throughout the night; home tests do not.
Which One Is Right for You?
This is a question best answered with the help of a qualified sleep specialist. That said, here are some general patterns that sleep providers often consider:
An in-lab study may be recommended if you:
- Have a complex medical history, including heart or lung conditions
- Are being evaluated for a sleep disorder other than obstructive sleep apnea
- Have previously had an inconclusive home sleep test
- Need closer monitoring during the study
A home sleep test may be a good starting point if you:
- Are experiencing classic symptoms of sleep apnea, such as loud snoring, gasping, or daytime sleepiness
- Are in generally good health without complex comorbidities
- Prefer the convenience of sleeping in your own bed
- Want a faster, more affordable first step toward answers
The Bottom Line
Both types of sleep studies serve an important purpose, and neither is universally better than the other. The right choice depends on your symptoms, health history, and what your provider believes will give the most useful picture of your sleep.
What matters most is that you take the step toward understanding your sleep. Many people live with undiagnosed sleep disorders for years, simply because the process felt complicated or inconvenient. Today, home sleep testing has made it easier than ever to get started.
If you've been wondering whether your sleep is as restful as it should be, exploring a home sleep test could be a simple, low-barrier way to find out.
This article is for general information only and isn't medical advice. Talk with a licensed clinician about your own symptoms and treatment options.