Screening workflow
Sleep apnea workup
OSA diagnostic pathway · Sleep apnea screening + diagnosis
From STOP-Bang at the kitchen table to in-lab polysomnography — the standard diagnostic chain.
What it measures
The multi-step pathway from initial sleep apnea screening to definitive diagnosis. Each step narrows the population that proceeds to the next — STOP-Bang as the fast inexpensive screen, ESS for symptom severity, home sleep apnea test for confirmation, polysomnography for cases needing the gold-standard study.
Reference context
0 guideline sources
Most people with elevated STOP-Bang who also have witnessed apneas and daytime sleepiness end up confirmed for OSA on a sleep study. The workflow exists to avoid both under-diagnosis (untreated CV/cognitive risk) and over-investigation (everyone in for PSG).
Population context — consult guideline targets below
Mechanism
Why moving this marker matters
Sleep apnea affects an estimated 80%+ of cases undiagnosed; a structured screening-to-diagnosis chain is the practical workflow that gets people into treatment without sending every snorer for an expensive lab study. Each step trades off cost / sensitivity / specificity.
How to measure
The test, where to get it, when to repeat
Method
Sequential — start at home with the questionnaires, escalate to home or lab studies based on findings.
Where
STOP-Bang and ESS: at home, free. HSAT: GP referral, ~€150–400. PSG: sleep clinic, ~€400–1,200 private (covered by most public systems on referral).
Fasting
Not required
When to test
AASM 2017
Initiate workup if STOP-Bang ≥3 or ESS ≥11 with consistent symptoms; HSAT acceptable for uncomplicated suspected moderate-severe OSA; PSG for ambiguous or comorbid cases.
Where to start
Providers that offer this screening
These providers offer the entry point into this workflow. Each step downstream — confirmatory tests, specialist referral — is handled by the clinical team that follows.
WatchPAT (Itamar Medical)
US · EU · INTLFDA-cleared single-use home sleep test — finger-worn sensor, validated against full polysomnography.
Visit WatchPAT (Itamar Medical)
Lofta
USEnd-to-end home sleep apnea pathway — WatchPAT One test kit, board-certified sleep-physician read, CPAP if indicated.
Visit Lofta
Healicus is not the provider. Your contract for the service is with whoever you choose. Links labelled Sponsored are paid affiliate relationships; unlabelled links are editorial reference only. See our disclosure for the full policy.
The workflow
Step-by-step diagnostic chain
- 1STOP-BangQuestionnaire
Initial risk stratification — 8 yes/no items, takes 2 minutes.
Advance: Score ≥3 → proceed to ESS and/or sleep clinic referral.
- 2Epworth Sleepiness ScaleQuestionnaire
Daytime sleepiness severity — adds the symptomatic dimension that STOP-Bang under-weights.
Advance: Score ≥11 or significant symptom burden → request a sleep study.
- 3Home sleep apnea testImaging
Confirmatory at-home polygraphy with airflow, oximetry, effort sensors.
- 4PolysomnographyImaging
In-lab gold standard — full PSG when HSAT is inconclusive, comorbidities are present, or pediatric/complex cases.
Context
Reading the numbers
Most people with elevated STOP-Bang who also have witnessed apneas and daytime sleepiness end up confirmed for OSA on a sleep study. The workflow exists to avoid both under-diagnosis (untreated CV/cognitive risk) and over-investigation (everyone in for PSG).
Caveats
Treatment-resistant hypertension or new atrial fibrillation are independent indications for sleep evaluation regardless of STOP-Bang score.
Practices
What's been shown to influence this marker
Sleep apnea screening
Program·Untreated obstructive sleep apnea drives cardiovascular and metabolic risk. Screen if you snore loudly, are tired despite enough hours, or have hypertension.
Why
Obstructive sleep apnea (OSA) is common (~10-15% of adults), often undiagnosed, and causally linked to hypertension, cardiovascular events, cognitive decline, and all-cause mortality. STOP-BANG is the most validated screening questionnaire. Diagnosis is by polysomnography or home sleep apnea testing. CPAP and other treatments substantially reduce risk in moderate-severe OSA.
The program
- 1
Take the STOP-BANG questionnaire (free online).
- 2
If 3+ positives, ask your GP for a sleep study referral.
- 3
Home sleep apnea testing or in-lab polysomnography confirms the diagnosis.
- 4
If moderate-severe, options include CPAP, mandibular advancement device, weight loss, positional therapy.
- 5
Re-screen if sleep quality degrades again after weight or lifestyle change.
Practical
Cadence
One-time screening; re-test if symptoms return
What you'll need
STOP-BANG questionnaire (online, 8 yes/no questions)
Ideal for
Loud snorers, witnessed apneas, daytime fatigue despite adequate sleep duration, hypertension, large neck circumference, BMI ≥35.
Markers this may influence
Evidence
See also
Related markers
Take to your physician
Worth discussing
- Which step is appropriate as your starting point given your symptoms.
- Whether HSAT or PSG is the right confirmatory study for you.
- If confirmed, what treatment options (CPAP, MAD, weight loss, positional therapy) fit best.
Sources
Cited literature
Edited by Carl Pöhl, MD · Healicus editorial
Last reviewed May 2026
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