Vestibular function testing

What is vestibular function testing?

Deep inside each ear, next to the hearing organ, are the balance organs of the inner ear (the vestibular system). They sense head movement and help keep your eyes steady and your body balanced. Vestibular function testing is a group of tests that check how well these organs, and the reflexes that connect them to your eyes and muscles, are working.

The tests are used to investigate dizziness, vertigo (a spinning sensation) and unsteadiness, and to help work out whether the problem is coming from the inner ear, the balance nerve, or elsewhere. They commonly include videonystagmography (VNG), which records eye movements; the caloric test, which gently runs warm and cool water or air into each ear; VEMP, which measures muscle responses to sound; and the video head impulse test (vHIT), which checks the eye reflex during quick head turns.

Most of the tests are usually not painful and non-invasive. The caloric test can briefly make you feel dizzy or queasy, but this passes within a few minutes and you are looked after throughout. The tests measure how the balance system is working, but they do not on their own diagnose every cause of dizziness — results are interpreted with your symptoms and examination.

A normal result is reassuring but does not rule out every balance condition, and some causes of dizziness lie outside the inner ear altogether.

Types, options & approaches

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

What different balance tests look at

Which tests you have depends on your symptoms; not everyone needs all of them.

Preparing for your test

• Ask which medicines to pause: anti-dizziness and some other medicines are often stopped for about 48 hours, but check with the clinic or your GP first and never stop essential medicines without advice.
• Avoid alcohol and recreational drugs for about 48 hours before the test.
• Do not wear eye make-up (mascara, eyeliner, eyeshadow) on the day, as it interferes with eye-movement recording.
• Have only a light meal a couple of hours before, as some tests can cause brief queasiness.
• Avoid caffeine and, if you smoke or vape, follow any advice to stop for a few hours beforehand.
• Bring your glasses if you wear them, and a list of your medicines and symptoms.
• Consider arranging a lift home in case you feel briefly unsteady afterwards.

What happens

The clinician asks about your dizziness and examines you, then carries out the tests that fit your symptoms. For VNG you wear video goggles and follow moving lights, change position, and lie down while your eye movements are recorded.

For the caloric test, warm and then cool water or air is gently run into each ear canal in turn, usually for around 30 seconds each. This can bring on a short spell of dizziness as the balance organ is stimulated; it usually settles within a few minutes and the clinician stays with you. Other tests may include quick, controlled head turns (vHIT), listening to clicks while sensors record muscle responses (VEMP), and gentle position changes to check for BPPV.

The whole battery often takes one to two hours, depending on which tests are needed. Afterwards your eye-movement and muscle recordings are interpreted alongside your symptoms, usually with a report explaining the findings.

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.

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.

Vestibular testing is safe and usually not painful, with the main downside being short-lived dizziness or nausea, mostly from the caloric test. Tell the team if you have a perforated eardrum, ear surgery or significant neck or back problems, as the tests can be adapted. A normal result does not rule out every cause of dizziness, so ask how the findings fit your symptoms.

Published figures to discuss

Vestibular function testing is non-invasive and carries essentially no lasting physical risk, so complication rates are not meaningful; the main effect is short-lived dizziness or nausea, mostly from the caloric test. What varies is diagnostic usefulness: results depend on which tests are done, whether medicines were paused, and the person's ability to tolerate the tests, and a normal battery does not exclude every cause of dizziness. Reliable universal accuracy figures vary by condition and protocol and are not quoted here.

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 usually no real recovery, though you may feel briefly dizzy or tired after the caloric test. Most people are back to normal within a short time, and results are explained afterwards, often in a report.

• Short-lived dizziness or queasiness, mainly after the caloric test
• Feeling a bit tired after a battery of tests
• Settling back to normal within a short time
• Results that are interpreted alongside your symptoms rather than alone
• Onward referral for treatment such as vestibular rehabilitation if needed

Aftercare

• Take it easy for a short while if you feel dizzy or queasy after the tests.
• Restart any paused medicines as advised by the clinic or your GP.
• Avoid driving until you feel completely steady if the caloric test made you very dizzy.
• Drink fluids and rest if you feel a little off afterwards.
• Attend any recommended treatment, rehabilitation or further tests.
• Ask how the results fit your symptoms and what the plan is.
• Report any new or severe symptoms, such as sudden hearing loss or neurological signs.

• Clarified which medicines to pause and which to continue
• No eye make-up planned for the day of testing
• A light meal planned beforehand
• Glasses and a list of medicines and symptoms ready
• A lift home arranged in case of dizziness
• Notes on your dizziness pattern to discuss
• Questions about what the result will change written down

⚠ Get urgent help if…

• Sudden hearing loss with the dizziness — seek same-day medical advice
• Severe, sudden headache, double vision, slurred speech, or weakness or numbness — call emergency services
• New tinnitus in one ear, or tinnitus that pulses with your heartbeat
• Dizziness with chest pain, fainting or palpitations
• Ear pain, discharge or fluid from the ear
• Vertigo so severe and persistent that you cannot keep fluids down

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

The results describe how well your inner-ear balance organs and reflexes are working, including whether one ear is weaker than the other, and can point to causes such as a vestibular weakness on one side or BPPV. This helps direct treatment, such as repositioning manoeuvres or vestibular rehabilitation.

A normal result is reassuring and suggests the balance organs are working, but it does not rule out every cause of dizziness — some causes lie in the brain, the heart, blood pressure or elsewhere. The tests are a guide to be read with your symptoms and examination, not a stand-alone diagnosis.

Balance test results reflect how your system is working at the time. Balance function can recover or change as conditions settle or as the brain compensates, so results may differ if repeated later. Repeat testing is sometimes used to track recovery or to reassess if symptoms change.

Related tests, treatments or support

Vestibular testing is often combined with a hearing test, since the balance and hearing organs sit together, and sometimes with blood pressure checks or imaging where the cause may lie elsewhere. Results frequently lead into vestibular rehabilitation or treatment for BPPV.

Follow-up & long-term care

Follow-up depends on the findings. You may be offered BPPV repositioning, vestibular rehabilitation exercises, a medicines review, or further tests or imaging, with a review to check progress. Report promptly if you develop sudden hearing loss or neurological symptoms.

• Complete any vestibular rehabilitation exercises as advised
• Attend review to check whether symptoms are improving
• Have hearing or balance rechecked if symptoms change
• Manage contributing factors such as blood pressure or medicines with your clinician
• Seek reassessment if dizziness returns or worsens

Repeat, follow-on and what comes next

• Tests are sometimes repeated to track recovery or if symptoms change.
• A normal result may lead to looking beyond the inner ear (heart, blood pressure, brain).
• Treatment such as vestibular rehabilitation is adjusted based on response.
• A caloric test cut short by dizziness may need repeating or substituting.

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 explanation of what the results show and how they fit your symptoms
• A written report and an onward plan (BPPV treatment, rehabilitation or further tests)
• Clear advice on restarting paused medicines
• A named contact and route back if dizziness worsens
• Clear advice on emergency signs (stroke-like symptoms, sudden hearing loss) that need urgent care

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:

• Which and how many tests are done (VNG, caloric, vHIT, VEMP, posturography)
• The time and expertise needed to carry out and interpret the battery
• Whether a hearing test is included
• The complexity of the written report
• Whether a follow-up consultation is included
• Any onward treatment such as vestibular rehabilitation, charged separately

• The fee and exactly which tests are included
• Whether a hearing test is bundled or charged separately
• Who interprets the results and whether a report is provided
• Whether a follow-up consultation to discuss results is included
• What happens, and what it costs, if further tests, imaging or rehabilitation are needed
• The cancellation policy

On the NHS? Vestibular function testing is available on the NHS, usually through ENT or audiology balance services when clinically indicated; private testing is mainly used for quicker access.

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

Consent traps and marketing red flags

These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.

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.

How Vuemedics verifies every consultant →

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

• Which tests will I have, and what is each one checking?
• Which of my medicines should I stop, and which must I keep taking?
• Will the caloric test make me dizzy, and how long will that last?
• What will the results tell you, and what won't they tell you?
• If the cause isn't in my inner ear, what happens next?
• Will I be offered vestibular rehabilitation or other treatment?
• 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?

Find a verified specialist for vestibular function testing

Every consultant is GMC-checked and independently reviewed. Search by postcode and distance, or switch to a map. Ordered by rating, relevance and recency — never by who pays.

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: St George's NHS — Vestibular function tests UCLH NHS — Balance testing BSA — Recommended procedure: The caloric test (PDF) VNG/ENG testing — StatPearls (NCBI)

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.