Venous – DVT Bilateral
A Venous – DVT Bilateral scan is a duplex ultrasound examination of both legs used to detect or rule out deep vein thrombosis (DVT) and assess venous blood flow.
Turnaround time
1 day
Book your test
Choose Service Type
Professional phlebotomist comes to you
+ £{{ home_visit_fee }}
Visit our clinic for your test
{{ clinic_visit_fee > 0 ? '+ £' + clinic_visit_fee : 'Free' }}
Home Visit Details
Home visits require at least 24 hours notice.
Select a clinic: Sorting by distance…
{{ clinic.full_address }}
{{ selectedClinic.full_address }}
Select a date
Select an hour
Available time slots: {{ timeSlots.length}}
Details about Venous – DVT Bilateral
What is a Venous – DVT Bilateral Scan?
A Venous – DVT Bilateral scan is a duplex Doppler ultrasound that evaluates the deep venous system in both legs, including the femoral, popliteal, and calf veins. The scan assesses blood flow, vein compressibility, and the presence of clots.
This investigation is the first-line and gold-standard imaging test for suspected DVT. It is non-invasive, painless, and does not involve radiation. Scanning both legs is important because clots can be present on either side, even if symptoms are only felt in one limb.
Early diagnosis of DVT is critical to prevent complications such as pulmonary embolism.
When a Venous – DVT Bilateral Scan is recommended
A bilateral DVT scan is recommended when there are symptoms or risk factors suggestive of deep vein thrombosis.
You may be referred for this scan if you:
- Have leg swelling, usually in one or both legs
- Experience leg pain, tenderness, or cramping
- Notice redness or warmth in the calf or thigh
- Have sudden leg swelling after travel or surgery
- Are immobile or recently hospitalised
- Are pregnant or postpartum
- Have a history of blood clots
- Require urgent exclusion of DVT
Benefits of a Venous – DVT Bilateral Scan
- Detects deep vein thrombosis accurately
Gold-standard test for DVT diagnosis. - Assesses both legs comprehensively
Identifies clots even when symptoms are one-sided. - Non-invasive and painless
No needles or radiation. - Supports urgent clinical decision-making
Enables rapid treatment where needed. - Evaluates blood flow and vein function
Identifies obstruction or reduced circulation. - Safe and repeatable
Suitable for follow-up monitoring. - Prevents serious complications
Early detection reduces embolism risk. - Performed by trained vascular specialists
Ensures accurate and reliable results.
How the Venous – DVT Bilateral Scan is performed
The scan is performed by a trained vascular sonographer using ultrasound equipment.
- You will usually lie on an examination couch
- Gel is applied to the skin
- A handheld probe is moved along both legs
- Gentle pressure is applied to assess vein compressibility
The scan typically takes 30–45 minutes, and you can resume normal activities immediately afterwards.
Understanding your Venous – DVT Bilateral Scan results
No evidence of DVT
Veins are compressible with normal blood flow and no clot detected.
Typical report:
- No evidence of deep vein thrombosis
Acute DVT detected
A clot is identified within one or more deep veins, affecting blood flow.
Typical report:
- Acute deep vein thrombosis present
Urgent medical management is usually required.
Chronic or previous clot changes
The scan may show residual changes from a previous DVT, such as scarring or reduced vein elasticity.
Typical report:
- Chronic post-thrombotic changes noted
Results are interpreted alongside symptoms and clinical history.
How It Works
Simple steps to get your results
Book Online
Choose your test online and book in seconds. Select your preferred clinic location or home visit option.
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.
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.