Sleep Studies and Testing
Home tests, in-lab polysomnography, MSLT, AHI scoring and how to read your sleep study results.
19 guides in this section.
Understanding Borderline Sleep Apnea Results: What They Mean and What to Do Next
Borderline sleep apnea results sit near the boundary between normal and mild obstructive sleep apnea. Learn what AHI thresholds mean, how sleep studies measure severity, what can cause borderline readings, and what steps to take next.
AHI vs RDI: Understanding Sleep Study Breathing Metrics
Learn the difference between AHI and RDI, two key measurements from a sleep study that count breathing disruptions during sleep, and what your results may mean.
Home Sleep Test vs In-Lab Study: How to Choose
A home sleep test records breathing signals in your own bed; an in-lab study records 12+ signals with a technologist present. AASM criteria decide which one a patient is eligible for.
How Long Does a Sleep Study Take? Timelines Explained
An in-lab sleep study takes one night — roughly 9 to 10 hours at the sleep center. A home sleep test records one to three nights. Here is how long each part takes, and how Medicare covers it.
STOP-BANG Questionnaire: What Your Score Means
STOP-BANG is an eight-question screen for sleep apnea risk. A high score does not mean you have apnea, but it does mean the question deserves a real answer.
Sleep Diary: How to Track Sleep the Right Way
A sleep diary is not a scorecard. It is a two-week record of your schedule and habits that helps a clinician see patterns a single night cannot show.
MSLT: What the Multiple Sleep Latency Test Measures
The MSLT is a daytime nap study that measures how quickly you fall asleep and whether you enter REM too soon. It is the main test for narcolepsy.
Epworth Sleepiness Scale: How to Score It and What It Means
The Epworth Sleepiness Scale asks how likely you are to doze off in eight ordinary situations. It is a quick screen, not a diagnosis, and the context matters.
Sleep Study Results Explained: AHI, ODI, and What They Mean
A sleep study report is more than one number. Here is how to read AHI, ODI, oxygen levels, sleep stages, arousals, and the questions worth asking.
Home Sleep Test False Negative: Why It Happens
A negative home sleep test does not always rule out apnea. Here is why tests miss cases, when to repeat, and why an in-lab study may be better.
Sleep Study CPT Codes: 95800, 95806, 95810, and 95811
What the common sleep study CPT codes mean, how home and in-lab tests are billed, and why your explanation of benefits looks different.
What to Expect During a Sleep Study
During a sleep study, sensors record your breathing, oxygen, heart rhythm and brain activity while you sleep. An overnight sleep test at a lab involves a technologist placing sensors and monitoring…
Home Sleep Test vs In-Lab Sleep Study
In a home sleep test vs lab sleep study decision, the home test is cheaper, more convenient and usually accurate for straightforward obstructive sleep apnea. The in-lab study is more detailed…
At-Home Sleep Apnea Test: What to Expect
An at home sleep apnea test is a portable device you use overnight in your own bed to check for obstructive sleep apnea. It usually measures breathing, airflow, oxygen levels, and effort. It is…
Sleep Testing Center: Locations, Costs and How to Prepare
A sleep testing center runs overnight polysomnography and home sleep apnea tests. Learn how to choose an accredited facility, what it costs, and how to prepare for accurate results.
Home Sleep Study: Testing Sleep Apnea Without a Lab
A home sleep study is a portable test you wear in your own bed to check for obstructive sleep apnea. It records breathing, oxygen level, and effort for one to three nights and typically costs less than a full laboratory study.
Sleep Study: What It Is and What to Expect
A sleep study records brain waves, breathing, heart rhythm, oxygen levels, and movements while you sleep to diagnose disorders like sleep apnea and narcolepsy. It can be done in a lab overnight or at home with a portable device.
Home Sleep Test vs In-Lab Study: Which One Do You Need?
A home sleep test records four breathing signals in one night to screen for obstructive sleep apnea, while an in-lab study captures over a dozen signals with a technologist present. Your doctor chooses based on health history, symptom severity, and whether other sleep disorders need evaluation.
What Happens During a Sleep Study?
A sleep study is an overnight, painless test that records brain waves, breathing, heart rhythm, oxygen levels, eye movements, and leg movements to diagnose sleep disorders.
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