Vestibular evoked myogenic potentials (VEMP)
A balance test that plays sounds into your ears and measures tiny muscle responses to check parts of the inner ear that other balance tests cannot reach.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- VEMP checks parts of the inner ear (the otolith organs) that other balance tests do not reach.
- It uses loud short sounds and measures tiny muscle responses, so you may need to tense a neck muscle or look up.
- It is one part of a balance assessment; a normal result does not rule out every cause of dizziness.
- Tell the clinician about neck problems and any hearing or ear conditions, as these can affect the test.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Checks otolith parts of the inner ear that caloric testing and vHIT cannot assess.
It is the wrong first step for sudden vertigo with stroke-like features (such as new weakness, slurred speech or a severe headache), which needs urgent...
You hear loud clicks and tense a neck muscle or look up while responses are recorded. You rest between runs.
A clear explanation of what your result pattern means alongside your symptoms.
You hear loud clicks and tense a neck muscle or look up while responses are recorded. You rest between runs.
Most people feel normal and can leave without resting. A neck muscle may feel briefly tired.
The clinician may comment on the day, but the formal report usually goes to the doctor who referred you to discuss...
What are vestibular evoked myogenic potentials (VEMP)?
Vestibular evoked myogenic potentials, or VEMP, are balance tests that check the parts of the inner ear that sense gravity and straight-line movement (the otolith organs) and the nerves that serve them. These are different from the parts checked by caloric testing or the video head impulse test, so VEMP adds extra information.
The test works because these inner-ear parts also respond to loud, short sounds (and sometimes gentle taps or vibration). Small sticky sensors on your skin pick up tiny muscle responses triggered by the sound. You wear headphones or earphones and hear a series of clicking or tone sounds.
There are two main types. The cervical VEMP (cVEMP) records from a neck muscle while you gently tense it, and checks the saccule and the lower part of the balance nerve. The ocular VEMP (oVEMP) records from just below the eyes while you look up, and checks the utricle and the upper part of the balance nerve.
VEMP is used to help diagnose specific inner-ear conditions and to build a fuller picture of how the balance system is working. Like all single tests, it checks one part of the system, so the result is read alongside your symptoms and other tests.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Options at a glance
These are the main approaches described in this guide. The right option depends on the diagnosis, your goals and what your clinician thinks is safe.
Cervical VEMP (cVEMP)
Records from a neck muscle (which you gently tense) to check the saccule and the lower part of the balance nerve.
Ocular VEMP (oVEMP)
Records from just below the eyes (while you look up) to check the utricle and the upper part of the balance nerve.
Air-conducted VEMP
Sounds are delivered through headphones or earphones. This is the usual method when hearing and the middle ear are normal.
Bone-conducted or tap VEMP
A gentle tap or vibration is used instead of sound, which can be helpful if hearing or the middle ear affects sound delivery.
Preparing for your test
- Ask whether to pause any balance or anti-sickness medicines beforehand, as advice varies between clinics — never stop a medicine without checking.
- Tell the clinic about neck problems, as the cervical VEMP needs you to tense a neck muscle.
- Mention any hearing loss, ear infection, perforated eardrum or grommets, as these can affect how the test is done.
- Do not wear eye make-up or heavy face cream, so the sensors stick well for the ocular VEMP.
- Wear a top that allows sensors to be placed on the neck and collarbone area.
- Bring a list of your medicines and details of any previous ear or balance tests.
What happens
The clinician cleans small areas of skin and attaches sticky sensors — on your neck and collarbone for the cervical VEMP, and just below your eyes for the ocular VEMP. You wear headphones or earphones.
For the cervical VEMP, you lie back or sit and gently lift or turn your head to tense a neck muscle while a series of loud clicks or tones plays into one ear at a time. For the ocular VEMP, you look upwards while the sounds play. Each run takes a short time, and you can rest between runs.
The sounds are loud but brief. You may find the neck tensing tiring, and the loud clicks can be startling at first. The whole test usually takes around 30 to 45 minutes. There is no lasting effect and most people carry on with their day straight afterwards.
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…
- It is the wrong first step for sudden vertigo with stroke-like features (such as new weakness, slurred speech or a severe headache), which needs urgent assessment, not an outpatient balance test.
- The cervical VEMP may not work well if you cannot tense the neck muscle, for example with significant neck problems or weakness.
- Air-conducted VEMP can be limited by middle-ear problems, a perforated eardrum or certain hearing losses; a bone-conducted or tap method may be needed.
- On its own it cannot diagnose BPPV, which is assessed with positioning tests such as the Dix-Hallpike.
Delay or rearrange if…
- You have a neck injury, neck surgery or unstable neck symptoms that prevent safe muscle tensing.
- You have an active ear infection or middle-ear problem affecting sound delivery.
- You are acutely unwell or unable to follow the test instructions.
- Your symptoms are rapidly worsening or you have new neurological symptoms needing urgent assessment first.
Alternatives to discuss
- Caloric testing, which checks the horizontal canal and tests each ear separately.
- Video head impulse test (vHIT), which checks the canals at fast head speeds.
- Positioning tests such as the Dix-Hallpike if BPPV is suspected.
- A hearing test and clinical assessment, sometimes enough on their own for milder cases.
- Imaging if a central (brain-related) cause or a specific structural problem is suspected.
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
- Checks otolith parts of the inner ear that caloric testing and vHIT cannot assess.
- Tests each ear separately and can look at upper and lower parts of the balance nerve.
- Helps diagnose specific inner-ear conditions and build a fuller picture of balance function.
- Can support the assessment of conditions where a thin or open area of inner-ear bone is suspected.
- Helps plan treatment and decide whether further tests are needed.
Risks & complications
- Loud clicking sounds that can feel startling
- Neck-muscle tiredness or mild ache from tensing during the cervical VEMP
- Skin redness where the sensors were placed
- A result that is unclear and needs repeating or another test
- Difficulty getting a clear response if a neck muscle cannot be tensed well
- Temporary discomfort from the sound level in people sensitive to loud noise; levels are kept within safe limits
VEMP is low-risk. The main things to expect are loud clicks and some neck-muscle effort. The test depends on you being able to tense the right muscle and on your hearing and middle ear, so results can be limited by these factors. As with any single test, a normal result does not rule out every cause of dizziness. Tell the clinician about neck problems and ear conditions beforehand.
Published figures to discuss
VEMP is a low-risk test, so meaningful complication rates are not the main issue. What varies is how well it detects problems, which depends on the condition, the method used, your hearing and middle ear, neck-muscle effort and age. Normal response values change with age, and some healthy people have absent responses. Exact accuracy figures vary widely by the condition being looked for, so none are given here.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Physical harm from VEMP | Very low | The test uses sounds/vibration and muscle recording; discomfort is usually brief. | Guide sourcesClinical context |
| Neck or muscle discomfort | Common short-term issue | cVEMP requires sustained neck muscle activation, which may be hard with neck pain or frailty. | Guide sourcesClinical context |
| Absent response not diagnostic alone | Core limitation | Age, conductive hearing loss, technique and muscle contraction can affect results. | Guide sourcesClinical context |
| Wrong interpretation without the whole vestibular picture | Recognised | VEMP is usually combined with audiometry, vHIT, calorics, imaging and symptoms. | 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. Most people feel fine straight after the test, though the neck muscle used in the cervical VEMP may feel briefly tired.
- No dizziness from the test for most people
- Mild, short-lived neck-muscle tiredness
- Slight skin redness where sensors were placed
- No lasting effects from the test itself
Aftercare
- Carry on with your day as normal if you feel well.
- Rest your neck if it feels tired after the cervical VEMP.
- Restart any paused medicines only as your clinician advised.
- Note any questions to ask when you get your results.
- Report any new or worsening symptoms to your clinician.
- Checked whether any medicines needed pausing
- Mentioned any neck problems and hearing or ear conditions
- Came without eye make-up or heavy face cream
- Wore a top allowing sensor placement
- Brought a list of medicines
- Noted questions for your results discussion
⚠ Get urgent help if…
- A sudden, severe or 'worst ever' headache, especially with dizziness
- Slurred speech, drooping face, or weakness or numbness in an arm or leg
- Double vision or loss of vision
- Fainting, chest pain or a very irregular pulse
- New or sudden deafness in one ear with the dizziness
- Severe, unrelenting dizziness rather than your usual symptoms
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
VEMP results are read by looking at whether a response is present, how big it is, and at what sound level it appears, comparing the two sides. A missing, much smaller or unusually easily triggered response can point to specific inner-ear problems, depending on the pattern.
The result is interpreted alongside your symptoms, hearing tests and other balance tests, not on its own. A normal VEMP does not prove your whole balance system is fine, and an abnormal result does not always explain all your symptoms. Your clinician will explain what your particular pattern means.
The result reflects how these parts of your inner ear are working around the time of the test. If your symptoms change, worsen or new symptoms appear, the test may be repeated or a different test used. A single normal result does not guarantee you will not develop balance problems later.
Related tests, treatments or support
VEMP is usually done as part of a wider balance assessment, often with videonystagmography, caloric testing and the video head impulse test, plus a hearing test, because each looks at the balance and hearing system differently.
Follow-up & long-term care
Your results are usually sent to the doctor who referred you, who explains what they mean and discusses any treatment, further tests or referral. Ask when you will get your results and who to contact if symptoms change.
Repeat, follow-on and what comes next
- The test sometimes needs repeating if muscle effort, sensor contact or technique made the result unreliable.
- A borderline or absent response may need a different method (for example bone-conducted) or another test.
- A normal result with ongoing symptoms often prompts further assessment rather than reassurance alone.
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 your result pattern means alongside your symptoms.
- A named route to ask questions and to report if symptoms change or worsen.
- A sensible plan if the result is normal but symptoms continue, including further tests or balance retraining.
- Joined-up interpretation if VEMP was done with other balance and hearing tests.
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 cervical VEMP, ocular VEMP or both are done
- Whether VEMP is part of a fuller balance test battery and hearing test at the same visit
- The seniority of the audiologist or specialist running and interpreting the test
- Whether a written report and a follow-up consultation to explain results are included
- The clinic or hospital facility fees
- Whether further tests or scans are recommended afterwards
- Exactly which VEMP tests and other balance tests are included
- Whether interpretation and a written report are included
- Whether a consultation to explain the results is included or charged separately
- What happens, and what it costs, if the test is inconclusive and needs repeating
- Whether any recommended follow-up tests are quoted
- The clinic's cancellation and rescheduling policy
On the NHS? VEMP testing is available on the NHS when clinically indicated; private testing may be chosen for faster access, choice of provider or a second opinion.
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.
Consent traps
- Being given a 'normal' result as full reassurance without explaining what the test cannot check.
- Not being asked about neck problems before neck-muscle tensing.
- Not being told that loud sounds are used, or about safe sound limits.
- No clear plan for who explains the result and what happens next.
Marketing red flags
- Claims that one balance test can find the cause of all dizziness.
- Promising a diagnosis from the test alone, without history and examination.
- Selling a long panel of tests without justifying each one.
- Implying a normal result guarantees nothing is wrong.
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.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- What are you hoping the VEMP will show in my case?
- What will the result change about my diagnosis or treatment?
- Will tensing my neck be a problem given my neck?
- What happens if the result is normal, abnormal or unclear?
- Will I need other balance or hearing tests as well, and why?
- 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
Does the VEMP test hurt?
Are the loud sounds safe for my hearing?
Why do I have to tense my neck or look up?
Is it available on the NHS?
What if I have a neck problem?
What if my result is normal but I still feel dizzy?
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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: NHS — Dizziness NICE CKS — Vertigo Evidence-based diagnostic use of VEMPs — PMC review VEMPs in practice: methods, pitfalls and clinical applications — PubMed Newcastle Hospitals NHS — Vestibular (balance) assessment British Society of Audiology — practice guidance and recommended procedures
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.
Related guides: Caloric testing · Video head impulse test (vHIT) · Dix-Hallpike test for BPPV · Vestibular rehabilitation therapy · Acoustic reflex testing