A private home sleep study typically costs £300–£600, including interpretation by a sleep specialist. A full in-lab (polysomnography) study runs £1,000–£2,000. Add a consultation (£150–£250) either side, and if sleep apnoea is confirmed, a CPAP machine costs roughly £250–£800 to buy.
- ✓Home sleep studies cost £300–£600 privately; in-lab studies £1,000–£2,000.
- ✓Most suspected sleep apnoea can be diagnosed at home — labs are for complex cases.
- ✓If you're diagnosed, budget £250–£800 for a CPAP machine plus ongoing consumables.
Home study or sleep lab?
Private sleep diagnostics come in two flavours. A home sleep study means collecting a small kit (or having it posted), wearing sensors for one or two nights in your own bed, and returning it for analysis. An in-lab study — full polysomnography — means a night in a sleep centre wired to considerably more sensors, with staff monitoring throughout.
| Home sleep study | In-lab study (polysomnography) | |
|---|---|---|
| Typical private cost | £300–£600 | £1,000–£2,000 |
| Where | Your own bed, 1–2 nights | Overnight in a sleep centre |
| Best for | Suspected obstructive sleep apnoea | Complex, unclear or neurological cases |
| Measures | Breathing, oxygen, heart rate, position | All of that plus brain waves, eye movement, muscle activity |
| Results | Typically 1–2 weeks | Typically 1–3 weeks |
For the most common question — is this obstructive sleep apnoea? — a home study is usually enough, which is why it's the standard first step both privately and on the NHS. Labs earn their price for trickier presentations: suspected narcolepsy, unusual movement disorders, or home results that don't match the symptoms.
What a sleep study actually measures
A home kit typically records your breathing airflow, chest and abdominal effort, blood oxygen levels (via a finger clip), heart rate, snoring and sleeping position. The headline output is your AHI — apnoea-hypopnoea index — the number of times per hour your breathing pauses or shallows significantly. Broadly: under 5 is normal, 5–15 mild, 15–30 moderate, over 30 severe (interpretation is always clinical, not just the number).
In-lab polysomnography adds EEG (brain waves), eye movements and muscle tone, which shows what sleep stage you're actually in — that's what lets specialists diagnose things a home kit can't see, like narcolepsy or REM behaviour disorders.
One caveat on consumer tech: smartwatches and phone apps that estimate 'sleep scores' or flag possible apnoea are screening hints, not diagnoses. They're a reasonable prompt to get tested, but no specialist will start treatment from a watch — and a reassuring app reading shouldn't override loud symptoms like witnessed breathing pauses.
The route and the timeline
Privately, the typical pathway is: an initial consultation with a sleep or respiratory specialist (£150–£250), a home study within days to a couple of weeks, then a follow-up (£100–£200) to discuss results and treatment. Some providers sell direct-to-consumer home studies without a consultation for less — fine for screening, but you'll still need a specialist to act on an abnormal result. End to end, the private route usually takes 2–4 weeks.
On the NHS, sleep studies are free but sit behind a GP referral and respiratory/ENT waiting lists — ENT's median wait is currently 14.8 weeks, and sleep clinic waits vary widely by area. For heavy snorers with classic symptoms, months of untreated daytime sleepiness is the real cost of waiting.
If you have private medical insurance, suspected sleep apnoea investigations are typically covered as diagnostics for a new condition — referral, study and follow-up — subject to your policy terms. Where insurers differ is what happens after diagnosis: sleep apnoea is generally managed as a long-term condition, and ongoing CPAP therapy is commonly not covered. Our sleep apnoea cover guide goes through this properly.
Cover that catches the next thing early
If it's sleep apnoea: CPAP and other costs after
- CPAP machine. The standard treatment for moderate-to-severe apnoea. Buying privately costs roughly £250–£800 depending on model (auto-adjusting machines at the upper end); masks are £50–£150 and need periodic replacement.
- Ongoing consumables. Filters, tubing and mask parts typically run £50–£150 a year.
- Mandibular advancement devices. Dentist-fitted gum-shield-style devices for milder cases: roughly £200–£1,500 fitted, versus £30 boil-and-bite versions of limited effectiveness.
- NHS alternative. If diagnosed, the NHS provides CPAP machines and consumables free on long-term loan — a genuine four-figure saving over the years, worth factoring in. Some people pay for a fast private diagnosis, then transfer to NHS care for the machine.
Is a private sleep study worth it?
If your symptoms are textbook — loud snoring, witnessed pauses, morning headaches, nodding off in meetings — and the local NHS sleep clinic wait is measured in months, a £300–£600 home study is one of the cheaper ways private healthcare buys back quality of life quickly. The maths gets even better if you take your diagnosis back to the NHS for free CPAP provision. Partners count in this calculation too: treated apnoea usually means the snoring stops, which is why sleep clinics quietly receive some of medicine's most grateful thank-you cards.
And if you're thinking longer-term: health insurance taken out while you're well would typically cover investigations like this within days of a GP referral — from around £38 a month for a healthy 30-year-old. It won't cover sleep problems you already have — pre-existing conditions are excluded across the market — so as ever, the best time to sort cover is before you need this page, not the morning after another terrible night.
Frequently asked questions
How much does a private sleep study cost in the UK?
A home sleep study typically costs £300–£600 including specialist interpretation, while a full in-lab polysomnography study runs £1,000–£2,000. Add £150–£250 for an initial consultation and £100–£200 for a results follow-up. Direct-to-consumer home kits without consultations sit at the cheaper end.
What's the difference between a home sleep study and a sleep lab?
A home study records breathing, oxygen, heart rate and position over one or two nights in your own bed — enough to diagnose most obstructive sleep apnoea. An in-lab study adds brain waves, eye movement and muscle monitoring overnight in a sleep centre, needed for complex cases like suspected narcolepsy.
Do I need a GP referral for a private sleep study?
Not always — several private providers sell home sleep studies direct to consumers, no referral needed. But to act on an abnormal result you'll want a sleep or respiratory specialist, and if you're claiming through health insurance, insurers typically require a GP or eligible referral first. Check your policy's claims route.
How long does it take to get private sleep study results?
Typically one to two weeks for a home study, and one to three for in-lab studies — with the whole private pathway, consultation to treatment plan, usually done in two to four weeks. That compares with months on many NHS sleep clinic pathways, where referral queues sit behind ENT and respiratory waits.
What does a sleep study measure?
Home kits record airflow, breathing effort, blood oxygen, heart rate, snoring and position, producing your apnoea-hypopnoea index (AHI) — breathing interruptions per hour. Under 5 is broadly normal, over 30 severe. In-lab studies add EEG brain-wave, eye-movement and muscle data to stage your sleep and catch rarer disorders.
Will health insurance pay for a private sleep study?
Usually yes for the diagnostic stage — investigation of a suspected new condition, including the consultation and study, is typically covered subject to policy terms and referral requirements. Ongoing treatment is the catch: sleep apnoea is generally classed as a long-term condition, and CPAP therapy is commonly excluded.
How much does a CPAP machine cost after diagnosis?
Roughly £250–£800 to buy privately, with auto-adjusting models at the top end, plus £50–£150 for masks and around £50–£150 a year in consumables. Worth knowing: once diagnosed, the NHS loans CPAP machines and supplies free — many people pay for a fast private diagnosis, then use NHS provision for treatment.
Can I get a sleep study on the NHS instead?
Yes — free, via GP referral to a sleep or respiratory clinic. The trade-off is time: waits vary widely by area and sit behind specialties like ENT, whose median wait is currently 14.8 weeks. If daytime sleepiness is wrecking your work or driving, that wait is the real cost.
Do I have to tell the DVLA about sleep apnoea?
If you have excessive sleepiness affecting your driving, you must stop driving, and once sleep apnoea is confirmed as the cause you must inform the DVLA. Effective treatment that controls sleepiness generally allows you to keep or regain your licence. It's a personal legal duty — and a strong argument for diagnosing quickly.
Is a cheap home sleep apnoea test kit accurate?
Reasonably, for its job: validated home kits detect moderate and severe obstructive sleep apnoea well. They can miss mild cases and can't diagnose non-breathing sleep disorders, so a negative result despite strong symptoms warrants a specialist review and possibly an in-lab study. Interpretation by a clinician matters as much as the kit.