
What Is Polysomnography? A Complete Guide to In-Lab Sleep Studies
Polysomnography records about two dozen sleep channels overnight in a lab. Here's what it measures, when it's medically necessary, and when a home test does the same job.
Sleep Health Resources
Expert articles on sleep health, sleep apnea, home sleep testing, and PAP therapy from our board-certified sleep medicine physicians.

Both diagnose sleep apnea. They aren't interchangeable. Here's a head-to-head on cost, accuracy, and convenience — and what the AASM clinical guidelines actually say about which to use first.

Polysomnography records about two dozen sleep channels overnight in a lab. Here's what it measures, when it's medically necessary, and when a home test does the same job.


























Can you prevent sleep apnea? Often yes — by addressing these 5 root causes. Prevention guide from board-certified sleep physicians at SleepDr.






Is snoring dangerous? Loud snoring can signal sleep apnea — a condition linked to heart attack and stroke. Learn the warning signs to watch for.

