Home sleep study

An overnight test done in your own bed that records breathing, oxygen levels, heart rate and effort, used mainly to diagnose obstructive sleep apnoea.

✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review

In short

A home study records breathing, effort, oxygen and heart rate overnight to diagnose obstructive sleep apnoea, and is NICE's recommended first-line test.
It does not measure brain waves or sleep stages, so it cannot tell exactly how much you slept and can miss some milder or non-respiratory sleep disorders.
It is done in your own bed over one night, with no needles and usually no time off; a report typically follows within a few weeks.
If the result is negative but symptoms persist, a fuller in-laboratory study (polysomnography) may be needed before ruling sleep apnoea out.

A plain-English summary. The detail — including risks and recovery — is below.

At a glance

TypeDiagnostic test (overnight monitoring at home)

AnaestheticNot needed

How long it takesOne night of sleep at home (recording runs while you sleep)

Hospital stayUsually no hospital stay

Time off workUsually none

When you'll see resultsA report is usually ready within a few weeks

On the NHS?Recommended by NICE as the first-line test for suspected sleep apnoea and widely used on the NHS

A general guide. Your specialist will give you advice for your situation.

Best fit

Diagnoses obstructive sleep apnoea in your own bed, which may reflect normal sleep better than hospital

Pause if

When a non-respiratory sleep disorder (such as narcolepsy, periodic limb movements or parasomnias) is the main question, as a home study cannot assess...

Main recovery point

You sleep at home wearing the sensors. You can turn over and get up if needed; reposition any sensor that slips and continue.

Good aftercare

A clear report explained by a clinician, set against your symptoms.

During the night

You sleep at home wearing the sensors. You can turn over and get up if needed; reposition any sensor that slips...

The next morning

You switch the recorder off and return the kit as instructed. There are no restrictions on your day.

Within a few weeks

A sleep scientist or consultant reviews the recording and produces a report. Timing varies between services.

After the report

You are told whether sleep apnoea is confirmed and how severe it appears, or whether a fuller study is needed...

Medical line illustration of cpap sleep apnoea therapy for Home sleep study. — Illustration only - not a diagnosis, medical advice or a promise of result. Your anatomy and treatment plan may differ. Vuemedics does not publish before-and-after photos.

What is a home sleep study?

A home sleep study, also called respiratory polygraphy, is an overnight test you do in your own bed. You wear a small set of sensors that record your breathing through the nose, the effort your chest and tummy make to breathe, the oxygen level in your blood and your heart rate.

It is used mainly to diagnose obstructive sleep apnoea, where the airway repeatedly narrows or closes during sleep. By recording airflow and effort together, it can show how often your breathing pauses or becomes shallow and how this affects your oxygen level — usually summarised as an apnoea–hypopnoea index, a count of events per hour.

It is more informative than oxygen monitoring alone, but it does not record your brain waves, so it cannot measure your sleep stages or exactly how much you slept. A normal home study does not completely rule out sleep apnoea or other sleep disorders, and if your symptoms continue you may be offered a fuller hospital sleep study.

Types, options & approaches

There may be different ways to do this. The right approach depends on the clinical question and your circumstances.

Standard respiratory polygraphy

The usual home set-up: a nasal flow sensor, chest and tummy effort bands, a finger oxygen probe and a small recorder, worn for one night.

Oximetry-plus screening

Simpler kits that mainly record oxygen and pulse. NICE suggests these when access to full polygraphy is limited; they are quicker but less detailed.

Newer wearable home-testing devices

Validated devices (such as those assessed by NICE) that use fewer or less intrusive sensors and need no nasal cannula or hospital set-up, where a service offers them.

Repeat or extended recording

Sometimes a second night is needed if the first trace was incomplete, or recording is extended if results are borderline.

Home sleep study vs in-laboratory polysomnography

Feature	Home study	In-laboratory study
Where	Your own bed	Sleep unit overnight
What it records	Breathing, effort, oxygen, pulse	The above plus brain waves and sleep stages
Comfort and cost	Simpler, lower cost	More sensors, more resource
Best for	Typical suspected sleep apnoea	Uncertain, complex or other sleep disorders

NICE recommends a home study first for most people, reserving in-laboratory polysomnography for negative results with continuing symptoms or more complex problems.

Preparing for your test

Keep your normal bedtime routine so the recording reflects a typical night.
Avoid alcohol and sedatives on the test night unless told otherwise, as they alter breathing.
Remove nail varnish or false nails from the finger used for the oxygen probe.
Shower or wash before fitting the sensors, and avoid heavy moisturiser, so they stick and read well.
Follow the fitting instructions or video carefully, as a correctly placed nasal sensor and effort bands matter.
Tell the service about nasal blockage, home oxygen, or any overnight breathing device you use.
Mention heart failure, chronic lung disease or other major health problems, as they affect interpretation.
Have the kit set up before you settle, and keep the clinic's number handy if a sensor comes loose.

What happens

You collect the kit, or it is posted to you, with written or video instructions. At bedtime you fit the sensors: a soft tube under your nose to measure airflow, stretchy bands around your chest and tummy to measure breathing effort, and a probe on your finger for oxygen and pulse. You switch the recorder on and sleep as normally as you can.

The device records through the night while you sleep in your own bed. It is usually not painful and there are no needles. If a sensor slips, you reposition it and carry on. In the morning you switch the recorder off and return the kit.

A sleep scientist or consultant then downloads and reviews the recording, counts the breathing events and oxygen dips, and produces a report. The findings are interpreted alongside your symptoms and examination, not in isolation.

Is this test right for me?

A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.

May not be suitable if…

When a non-respiratory sleep disorder (such as narcolepsy, periodic limb movements or parasomnias) is the main question, as a home study cannot assess these.
When precise sleep staging is needed, which requires in-laboratory polysomnography.
In people with heart failure or significant chronic lung disease, where limited-channel results can be harder to interpret.
When someone cannot manage to fit and tolerate the sensors at home without support.

Delay or rearrange if…

You have a current chest infection or asthma/COPD flare that would make the night untypical.
You have heavy nasal blockage (for example a cold) affecting the airflow sensor.
You cannot avoid alcohol or sedatives on the test night when asked to.
The kit is faulty or you have not been shown how to set it up.

Alternatives to discuss

Overnight pulse oximetry as a simpler screen where polygraphy access is limited.
In-laboratory polysomnography for complex, uncertain or non-respiratory problems.
Validated wearable home-testing devices recommended by NICE where available.
Watchful waiting with symptom and weight review if suspicion is low.

Before you decide

Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.

What matters most to me?

Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.

What are all my options?

Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.

What would make me pause?

Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.

What happens if I do nothing today?

For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.

Benefits

Diagnoses obstructive sleep apnoea in your own bed, which may reflect normal sleep better than hospital
Records breathing and effort, not just oxygen, so it is more informative than oximetry alone
Avoids an overnight hospital stay and is usually quicker and lower cost than a full study
Gives an estimate of how severe sleep apnoea is, to guide treatment decisions
Can be repeated relatively easily if the first night did not record well

Risks & complications

More common

A poor-quality or incomplete recording (for example if the nasal sensor slips) needing a repeat night
Disturbed or untypical sleep from wearing the sensors
Mild discomfort from the nasal tube, finger probe or effort bands

Less common

A falsely reassuring result that misses milder sleep apnoea
Missing a non-respiratory sleep disorder the test does not assess
Skin irritation or marks from sensors or tape

Rare but serious

Needing several attempts before a usable recording is obtained
A misleading result in heart failure or significant lung disease, requiring a fuller study

The main limitations are accuracy and scope, not physical harm: a home study can miss milder disease and does not measure sleep itself, so it cannot exclude every sleep problem. Ask what your result will and will not show, and what the plan is if it is negative but you still have symptoms.

Published figures to discuss

A home study carries no meaningful physical risk; the relevant figures concern accuracy and study quality. Diagnostic agreement with full polysomnography, and the chance of a non-diagnostic recording needing repeat, vary with the device, how sensors are fitted, the scoring rules used and the patient's other conditions, so published figures should be read as guides rather than fixed numbers.

Figure	Reported range	How to interpret it	Source / confidence
Physical harm from the study	Very low	Sensors record breathing, oxygen levels and movement; they do not deliver treatment or electricity into the body.	Guide sourcesClinical context
Failed or non-diagnostic recording	Recognised	Loose probes, poor oximeter signal, short sleep time or equipment removal can mean the test needs repeating.	Guide sourcesClinical context
False-negative result	Recognised, especially if sleep was untypical	A home study may underestimate sleep apnoea if you slept little, avoided supine sleep, drank less alcohol than usual, or had mild/position-dependent disease.	Guide sourcesClinical context
Missing non-OSA sleep disorders	Recognised limitation	Parasomnias, narcolepsy, periodic limb movements and complex sleep disorders often need laboratory polysomnography.	Guide sourcesClinical context

These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.

What happens afterwards

There is no physical recovery from a home sleep study. It records while you sleep, and afterwards you simply return the kit and wait for the recording to be reviewed and reported.

During the night

You sleep at home wearing the sensors. You can turn over and get up if needed; reposition any sensor that slips and continue.

The next morning

You switch the recorder off and return the kit as instructed. There are no restrictions on your day.

Within a few weeks

A sleep scientist or consultant reviews the recording and produces a report. Timing varies between services.

After the report

You are told whether sleep apnoea is confirmed and how severe it appears, or whether a fuller study is needed. Treatment is discussed once the picture is clear.

What's normal — and not a worry

No physical after-effects from the test
A slightly disturbed or untypical night from wearing the sensors
A short wait for the recording to be reviewed and reported
Sometimes being asked to repeat the night if the trace was incomplete

Aftercare

Return the kit promptly and complete, so it can be reused for others.
Note anything unusual about the night, such as poor sleep or a sensor falling off, and tell the service.
Wait for the formal report rather than interpreting any on-screen numbers yourself.
Keep your follow-up appointment, as the result makes most sense alongside your symptoms.
Ask who will explain the result and what the plan is if it is normal but you still feel unwell.
If you were tested because of sleepiness, take care with driving until advised. If you are told to notify the driving licence authority, this is the DVLA if you live in England, Scotland or Wales, or the DVA if you live in Northern Ireland.

Before your test

Charger or batteries ready for the recorder
Fitting instructions or video watched in advance
Nail varnish removed; skin clean and dry for sensors
Normal bedtime planned, no alcohol that night
Clinic contact number saved in case a sensor fails
A note of who will give the result and when

⚠ Get urgent help if…

Severe daytime sleepiness, especially falling asleep while driving — stop driving and seek urgent advice
Choking, gasping or witnessed stopping of breathing in sleep
New or worsening breathlessness, especially at rest or lying flat
Chest pain, palpitations or fainting
Morning headaches with confusion or marked drowsiness
Blue or grey lips or fingertips — seek urgent medical help

Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.

General guidance — it doesn't replace the specific advice your specialist gives you.

Results & realistic expectations

A good-quality recording lets your clinician count how often your breathing paused or became shallow each hour and how far your oxygen dipped, usually summarised as an apnoea–hypopnoea index. This helps confirm whether you have obstructive sleep apnoea and how severe it is.

The result cannot measure your sleep stages or guarantee that every sleep problem has been excluded. A negative home study in someone with ongoing symptoms often leads to a fuller in-laboratory study, and the numbers are always read alongside how you actually feel.

How long it lasts

A study reflects the night it was recorded. If your weight, symptoms, alcohol use or general health change, an earlier result may no longer apply and repeat testing may be needed. It is a snapshot, not a permanent assessment.

Related tests, treatments or support

A home study is often combined with questionnaires about sleepiness and an assessment of your weight, blood pressure and general health. If results are borderline or symptoms persist, it may be followed by full polysomnography. If sleep apnoea is confirmed, the next step is usually a treatment discussion.

Follow-up & long-term care

Your sleep service tells you when and how you will receive the report and who will explain it. If sleep apnoea is confirmed, you may be offered CPAP or a mandibular advancement device with planned follow-up. If the study is negative but symptoms continue, ask about an in-laboratory study.

Repeat, follow-on and what comes next

A proportion of home studies are non-diagnostic and need repeating, often because a sensor slipped.
A negative study with ongoing symptoms commonly leads to in-laboratory polysomnography.
Results are a snapshot and may need repeating if symptoms or weight change.

Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.

What good aftercare looks like

A clear report explained by a clinician, set against your symptoms.
A named contact and a defined next step if the result is normal but you remain symptomatic.
A plan for in-laboratory study when results are borderline or the picture is complex.
Safety advice on driving and sleepiness while results are awaited.

What affects the cost

Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:

Whether a simple oximetry-style kit or a fuller polygraphy kit is used
Who reviews and reports the recording (sleep scientist or consultant)
Whether a follow-up consultation to explain the result is included
Whether a repeat night is needed if the first recording is incomplete
Whether onward tests (in-laboratory polysomnography) are likely
Postage or courier costs for the home kit

Make sure your written quote includes

The cost of the home study kit and test itself
Whether reporting by a qualified clinician is included
Whether a consultation to explain the result is included
What happens, and what it costs, if the test must be repeated
Whether further tests or treatment are quoted separately
The cancellation and rebooking policy

On the NHS? Home respiratory polygraphy is NICE's recommended first-line test and is widely available on the NHS; private testing is mainly used for speed, choice or self-pay.

You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.

Choosing a specialist safely

Check the specialist is on the GMC Specialist Register for this area.
Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
You're entitled to your total cost in writing — including any follow-up — before you decide.

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Questions to ask your medical professional

Take this to your consultation. A good specialist will welcome every one of these.

Is a home study the right test for me, or do I need an in-laboratory study?
What will this result change about my treatment?
What happens if it is negative but my symptoms continue?
How severe does my sleep apnoea look, and what does that mean?
Could my heart or lung condition make the result harder to interpret?
Who will explain my report, and when can I expect it?
Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
Will you be the specialist who carries out my test, and who looks after me afterwards?
What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
What does a realistic result look like — and what can this test not achieve?
What are my options, including waiting, doing nothing for now, or choosing a different approach?
Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
What is the total cost in writing, including any follow-ups, and how much time do I have to decide?

Frequently asked questions

Is a home sleep study available on the NHS?

Yes. NICE recommends home respiratory polygraphy as the first-line test for suspected sleep apnoea, and it is widely used on the NHS. Private testing is also available, usually for speed or convenience.

Does it hurt or involve needles?

No. The sensors sit on the skin, under the nose and around the chest and tummy. There are no needles, though the nasal tube and finger probe can feel slightly odd at first.

Will I sleep properly with the sensors on?

Many people sleep a little less well than usual, which is expected. The test still usually captures enough information; if your night was very poor, it can be repeated.

What if the result is normal but I still feel exhausted?

Tell your clinician. A home study does not measure sleep itself and can miss milder or non-respiratory problems, so ongoing symptoms may lead to a fuller in-laboratory study.

How is this different from a hospital sleep study?

A home study records breathing, effort and oxygen but not brain waves or sleep stages. An in-laboratory study adds those and is used for uncertain, complex or non-respiratory sleep problems.

Can I drink alcohol the night before?

It is usually best avoided on the test night, as alcohol relaxes the airway and changes breathing, which can affect the result. Follow your service's advice.

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How we made this page

Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →

Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.

Sources & standards: NICE NG202 — OSAHS in over 16s (diagnostic testing) NHS — Sleep apnoea NICE — Home-testing devices for diagnosing OSAHS (DG62 / HTG735) Sleep Apnoea Trust — Diagnosis of sleep apnoea British Thoracic Society — Sleep apnoea resources Home respiratory polygraphy scoring study — PMC DVLA — Assessing fitness to drive DVA Northern Ireland — Telling DVA about a driver medical condition

Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.

Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.