Topics

In-depth topic pages on sleep tests, treatments, and patient pathways. Evidence-based guides written by the WhySleep.ai editorial team. More topics added as we expand Phase 4 coverage.

• Home Sleep Apnea Test (HST): What It Is, When It’s Right

  The portable, at-home alternative to in-lab polysomnography for adults with suspected obstructive sleep apnea. What it measures, when it’s appropriate, its accuracy limits, and why not all “HSTs” are created equal — anchored on AASM clinical practice guidelines and CMS Medicare coverage policy.

• In-Lab Sleep Study (Polysomnography): The Comprehensive Overnight Test

  The attended overnight polysomnogram — the diagnostic gold standard for the full range of sleep disorders. What the twelve-plus channels measure, what the night involves, when it’s the right test over a home study, and how it fits into the broader diagnostic pathway.

• Sleep Care Explained: Clinics, Labs, Testing & How It’s Paid For

  A plain-language guide to how sleep care is organized and paid for: the difference between a sleep clinic and a sleep lab, what remote monitoring and durable medical equipment are, and how insurance, cash pay, Medicare, and HSA/FSA accounts fit together.