Concierge neuro-otology · London
Subjective visual vertical and horizontal (SVV / SVH), bedside vestibular test of utricular otolith function.
The SVV / SVH test measures your perception of vertical and horizontal — a fast bedside vestibular test for utricular otolith function. Foundation for detecting acute vestibular syndrome, utricular hypofunction and central vestibular disorders.
Why patients choose us
- 01
The right hands
We route you to a consultant neuro-otologist or accredited vestibular scientist — SVV / SVH is a bedside test where interpretation is everything.
- 02
Often answers same-day
Findings can frequently be discussed immediately, with a written report to follow.
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Independent, and free
We are paid by no clinic, so the recommendation is impartial and costs you nothing.
Key facts
What the SVV / SVH test is, at a glance.
The essentials — how it is delivered, how long it takes, what counts as normal, and where it sits in a vestibular battery.
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Bedside utricular vestibular test
A perceptual measure of vertical and horizontal — the classic bedside probe of utricular otolith function.
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5–10 minute test
Quick to perform in clinic; no radiation, no needles, no preparation.
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Bucket method or laser-guided
Delivered with the low-tech bucket method or a laser-guided rig in a darkened room.
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Normal tilt < 2.5°
Averaged tilt below roughly 2.5° from true vertical is considered within the normal range.
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Complements caloric, vHIT and VEMP
Sits alongside the caloric test, video head impulse test and VEMPs in a full vestibular battery.
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Foundation of AVS workup
Part of the acute vestibular syndrome workup — helping separate peripheral from central causes.
The problem
An SVV / SVH test is only as good as who interprets it.
A tilt in degrees is a number — the person interpreting it decides whether it points to a peripheral utricular pattern, a central lesion, or noise. We route you to a consultant neuro-otologist or accredited vestibular scientist, not a generalist.
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Acute vertigo or imbalance?
We arrange rapid vestibular assessment and route findings to neuro-otology or the stroke team.
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Suspected utricular dysfunction?
SVV / SVH quantifies the perceptual tilt and pairs with vHIT and VEMP for a full picture.
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Complex or refractory dizziness?
We fold the test into a rounded assessment — hearing, migraine history, imaging if needed.
The pathway
From consultation to plan — what happens, in order.
One clinician from first message to structured plan — often within days.
Phase 1 · Before
Consultation and triage
Phase 2 · On the day
~5–10 minutes at the clinic
Phase 3 · After
Interpretation, report, plan
- 01
Before
Vertigo / vestibular consultation
A structured history: onset, triggers, hearing, migraine, red flags — before any test is chosen.
- 02
On the day
Bucket or laser-guided SVV / SVH
Performed in a darkened room using a bucket viewer or a laser-guided rig, monocular and binocular.
- 03
On the day
Repeated measurements (right + left tilt)
Multiple trials from starting tilts to each side, to average out perceptual noise.
- 04
On the day
Averaged tilt calculated
The mean deviation from true vertical / horizontal is calculated, with the direction of tilt noted.
- 05
After
Interpretation vs normative range
Averaged tilt is compared against age-adjusted normative data — normal is typically < 2.5°.
- 06
After
Structured report
A concise report from the reporting clinician, integrated with any caloric, vHIT and VEMP results.
- 07
After
Structured plan
A clear onward plan — vestibular rehabilitation, ENT / neuro-otology referral, or urgent stroke pathway if central signs.
Typical end-to-end: 3–7 days. Urgent cases: same day.
What it shows
When SVV / SVH is the right test.
SVV / SVH answers a specific question — is there a utricular imbalance, and does the pattern look peripheral or central. These are the presentations we see most.
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Utricular hypofunction (ipsilesional tilt)
A consistent tilt toward the affected ear — the classic sign of peripheral utricular dysfunction.
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Acute vestibular neuritis
Ipsilesional SVV tilt in the acute phase, typically resolving over weeks as compensation occurs.
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Vestibular schwannoma
Persistent SVV deviation can accompany asymmetric hearing loss and unsteadiness.
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Otolithic Meniere’s
Fluctuating SVV in Meniere’s disease, especially with otolithic (Tumarkin) crises.
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Ocular tilt reaction
Skew deviation, head tilt and ocular torsion — SVV quantifies the perceptual component.
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Central vestibular tilt (brainstem stroke)
Large, sometimes contralesional tilt from lateral medullary or pontine lesions.
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Post-labyrinthectomy tilt
Expected tilt toward the operated side, tracked as central compensation develops.
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Red flag: acute severe tilt with brainstem signs — urgent stroke team
Do not wait for an outpatient slot. Refer urgently to the stroke team.
Treatment options
What follows an abnormal SVV / SVH result.
The test does not treat — it shapes the plan. These are the routes a consultant may choose from once the picture is clear.
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Vestibular rehabilitation therapy
Structured exercises to drive central compensation — the mainstay of most peripheral vestibular disorders.
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Anti-migraine therapy
Lifestyle triggers, prophylaxis and acute treatment where vestibular migraine is driving symptoms.
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Diuretic + salt restriction
First-line medical management of Meniere’s disease, with lifestyle counselling.
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Intratympanic steroid
Local steroid injection for Meniere’s or sudden vestibular loss, sparing systemic exposure.
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Intratympanic gentamicin
Targeted chemical labyrinthectomy for refractory Meniere’s vertigo, with careful hearing monitoring.
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ENT / neuro-otology referral
Consultant review for unclear diagnoses, asymmetric hearing loss, or persistent central signs.
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Structured follow-up
Serial SVV / SVH to track compensation and confirm the trajectory of recovery.
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Multi-disciplinary team review
Neuro-otology, neurology, audiology and physiotherapy input for complex or refractory cases.
Our vetted London network
A small panel of clinics, we picked them.
Neuro-otology partners across central, north, west and south London. Not listed publicly — introductions are made privately, once we understand your case.
Selection criteria
How we choose every clinic in our network.
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Consultant neuro-otologists or accredited vestibular scientists
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Standardised SVV / SVH protocols with normative data
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Full vestibular battery available — caloric, vHIT, VEMP
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Onward stroke-team or ENT / neuro-otology pathway when needed
Red flags
When SVV / SVH points at something urgent.
SVV / SVH itself is entirely safe — the practical questions are about the patterns that must not be missed and the pathways they should trigger.
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Acute severe tilt + brainstem signs
Large SVV tilt with dysarthria, diplopia, limb ataxia or crossed sensory signs — urgent stroke pathway.
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Post-stroke ocular tilt reaction
Persistent SVV tilt after brainstem or thalamic stroke, often with skew deviation.
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Cerebellar stroke
Isolated vertigo with subtle central signs — a low threshold for imaging is essential.
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Vestibular schwannoma
Asymmetric hearing loss, tinnitus and persistent SVV deviation warrant MRI of the internal auditory meatus.
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Post-labyrinthectomy vertigo
Expected in the early period; serial SVV / SVH helps confirm central compensation.
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Persistent postural-perceptual dizziness (PPPD)
Chronic non-vertiginous dizziness after an acute vestibular event, benefiting from targeted rehabilitation.
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Post-concussion syndrome
Vestibular symptoms after head injury — SVV can flag utricular involvement contributing to imbalance.
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Post-COVID vestibular dysfunction
Emerging pattern of persistent vestibular symptoms following COVID-19 infection.
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Meniere’s with drop attacks
Tumarkin otolithic crises — sudden falls without warning, warranting urgent ENT review.
Reading your report
An SVV / SVH report can look technical. It isn’t.
Whatever the finding, the report keeps to the same four parts.
A quiet reminder
The report is written for your doctor, not for you — and that’s normal.
If you would like us to talk you through it before your follow-up, just ask.
- 01 Header
Indication and vestibular history
Your details, the reason for the test, and the vestibular history that frames interpretation.
- 02 Technique
Method and trials
Bucket or laser-guided rig, monocular and binocular trials, and the starting tilts used.
- 03 Findings
Averaged tilt, direction, comparison to norm
Mean SVV / SVH deviation in degrees, direction of tilt, and comparison against the normative range.
- 04 Impression
The conclusion: read this first
Normal, peripheral utricular pattern, or central pattern — with the concrete next step. Read this first.
Recognised by major UK insurers
Cover depends on your policy and clinic; we confirm with your insurer before booking.
Frequently asked
Everything we get asked about SVV / SVH.
Quick answers on what the test measures, how it is delivered, what is normal, and when it becomes urgent.
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What does the SVV / SVH test show?
It measures your perception of true vertical and horizontal — a direct bedside probe of utricular otolith function. A consistent tilt from true vertical suggests a vestibular imbalance, most often peripheral (toward the affected ear) but sometimes central.
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How is the SVV / SVH test performed?
In a darkened room using either a bucket viewer (with a line inside) or a laser-guided rig projected onto a wall. You rotate the line until it looks vertical, and the deviation from true vertical is measured across several trials.
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What is a normal SVV result?
Averaged tilt below roughly 2.5° from true vertical is generally considered within the normal range, though age-adjusted normative data are used for interpretation.
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How long does the SVV / SVH test take?
Typically 5–10 minutes, including repeated measurements from right-tilted and left-tilted starting positions.
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Do I need other vestibular tests as well?
Often yes. SVV / SVH complements the caloric test, video head impulse test (vHIT) and vestibular evoked myogenic potentials (VEMPs) — together they build a full picture of peripheral vestibular function.
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When is the SVV / SVH test urgent?
A large acute tilt with brainstem signs — double vision, slurred speech, limb ataxia or crossed sensory signs — is a stroke-team referral, not an outpatient booking.
Sources
Clinical guidance behind this page.
- Bárány Society. Classification of vestibular disorders.
- British Society of Audiology. Recommended procedures for vestibular assessment.
- American Academy of Otolaryngology–Head and Neck Surgery. Vestibular testing guidance.
- European Academy of Otology and Neurotology. Position papers on vestibular assessment.
Published 2026-07-30. Last reviewed 2026-07-30. Next review 2027-07-30. Reading time ~4 minutes.
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In practice, in London
Booking subjective visual vertical horizontal privately in London — what actually happens
With subjective visual vertical horizontal, the London question is usually about report turnaround and the radiologist reading it — not whether the scan is available. Public provision for subjective visual vertical horizontal is competent but constrained by capacity. Private London clinics tend to have shorter diaries and longer appointment slots, so you get the same specialists with more time. For people who’ve been going round in circles with primary care, that first proper conversation is often what shifts things.
Once you’re in the private system for subjective visual vertical horizontal, the pace picks up noticeably. Consultant slots run to time, imaging is usually available in the same building or a short walk away, and the report comes back typed and detailed. It’s the coordination that tends to feel different — one person on the other end of the phone, not a switchboard. For subjective visual vertical horizontal specifically, the difference between a routine report and a sub-speciality read is where private care earns its keep.
Where a good concierge earns its keep is in the matching. There are dozens of consultants in London who see subjective visual vertical horizontal — but not all of them are the right fit for every case. We narrow it down based on subspecialty, insurer coverage, the specific question being asked, and whether continuity into treatment matters. The right first appointment saves you from repeating yourself later.