Electrocardiogram (ECG)
An Electrocardiogram (ECG) is a simple, non-invasive test that records the electrical activity of the heart, helping identify rhythm and conduction ab...
Carotid Ultrasound
195.00
London Blood Tests offers professional carotid ultrasound scans, providing accurate vascular imaging and results you can trust.
Turnaround time
1 day
Same-Day Appointments
UKAS Accredited Labs
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Under 18? Patients under 18 can only be seen at GB Medlabs and Clinilabs, Monday to Friday only.
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Details about Carotid Ultrasound
What is a Carotid Ultrasound Scan?
A carotid ultrasound scan is a diagnostic imaging test used to evaluate the carotid arteries, the major blood vessels located on each side of the neck that supply blood to the brain. The scan uses high-frequency sound waves to produce detailed images of the artery walls and measure blood flow through these vessels.
This examination helps identify narrowing (stenosis), plaque build-up and other vascular abnormalities that may increase the risk of stroke or transient ischaemic attack (TIA). By assessing the structure and blood flow within the arteries, clinicians can determine whether circulation to the brain is being affected.
Carotid ultrasound is widely used as a preventative cardiovascular screening test, particularly for individuals with risk factors for stroke or vascular disease.
Why do I need a Carotid Ultrasound?
A carotid ultrasound may be recommended when there is concern about reduced blood flow to the brain or when assessing stroke risk.
You may benefit from this scan if you experience:
- Dizziness or episodes of fainting
- Sudden weakness or numbness on one side of the body
- Vision disturbances or temporary vision loss
- Difficulty speaking or understanding speech
- History of stroke or transient ischaemic attack (TIA)
- High blood pressure
- High cholesterol
- Diabetes
- Smoking history
- Family history of cardiovascular disease
This scan is also commonly used for preventative screening in people with cardiovascular risk factors.
Benefits of a Carotid Ultrasound Scan
- Non-invasive vascular imaging
Uses ultrasound technology without radiation. - Detects artery narrowing (stenosis)
Identifies plaque build-up that may restrict blood flow. - Helps assess stroke risk
Important for early detection of vascular disease. - Measures blood flow in real time
Doppler ultrasound evaluates circulation to the brain. - Quick and painless procedure
Usually completed within a short time. - Safe for repeated monitoring
Suitable for follow-up imaging. - Supports preventative cardiovascular care
Helps identify vascular disease early. - Provides valuable diagnostic information
Assists clinicians in planning treatment or further investigation.
Step-by-Step – How We Offer Carotid Ultrasound Scans
Home-Based Ultrasound Scan (UK-wide)
- Book your ultrasound appointment online or by phone
- A qualified clinician travels to your home or chosen location
- The scan is performed in the comfort and privacy of your home
- The procedure typically takes 15–30 minutes
- Findings are explained during or shortly after the scan
Important:
Carotid ultrasound scans are provided as home-visit services across the UK, allowing access to vascular imaging without attending a clinic.
Your Carotid Ultrasound Results Explained
Normal Findings
What this means:
- Carotid arteries appear normal
- Blood flow is unobstructed
- No significant plaque build-up detected
What it suggests:
Healthy carotid circulation with low evidence of arterial narrowing.
Possible Abnormal Findings
A carotid ultrasound may detect:
- Narrowing of the carotid arteries (stenosis)
- Plaque build-up within the artery walls
- Reduced or turbulent blood flow
- Thickening of the artery lining
- Early signs of vascular disease
Further investigation or treatment may be recommended depending on findings.
How It Works
Simple steps to get your results
1
Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
2
Visit or Test at Home
Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.
3
Get Your Results
Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.
Take control of your health with London Blood Tests
WhatsApp UsHow to Prepare for Your Test
Follow these guidelines for accurate results
Sample Timing
Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.
Fasting & Hydration
Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.
Medications & Supplements
Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.
Hormones & Menstrual Cycle
For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.
If you have any questions or special circumstances, our team is happy to advise before your appointment.
Frequently Asked Questions
It examines the carotid arteries in the neck to detect narrowing, plaque build-up and blood flow abnormalities.
No. The procedure is painless and non-invasive.
A carotid ultrasound usually takes 15–30 minutes.
Yes. Narrowing or plaque in the carotid arteries can increase stroke risk.
Yes. Ultrasound uses sound waves and does not involve radiation.
Yes. Ultrasound can identify plaque deposits within the artery walls.
Generally no special preparation is required.
Initial findings may be discussed during or shortly after the scan.
Individuals with cardiovascular risk factors or symptoms affecting blood flow to the brain.
Private carotid ultrasound scans can often be booked directly without a referral.
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