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Diagnosing Deep Vein Thrombosis (DVT)
How is deep vein thrombosis (DVT) diagnosed?
If your doctor thinks that you have DVT, you probably will have an ultrasound test to measure the blood flow through your veins and help find any clots that might be blocking the flow.
To see if you need an ultrasound, the doctor will do a physical exam. This will include checking your heart and lungs and checking your legs for warmth, swelling, bulging veins, or changes in skin color. Your doctor will also ask questions about your past and current health. These questions may include:
- Do you have any swelling or pain in your legs?
- Have you had a blood clot before?
- What medicines do you take?
- Have you had surgery recently, or have you been on any long trips lately?
Other tests
More tests may be used when ultrasound results are unclear. These tests may help diagnose or exclude a blood clot. These tests may include:
- D-dimer test.
- MRI.
- CT scan.
If your doctor thinks you might have a pulmonary embolism, your doctor may test your lungs.
Condition Spotlight
Clinical Trials
Clinical trials are research studies that evaluate a new medical approach, device, drug, or other treatment. As a Stanford Health Care patient, you may have access to the latest, advanced clinical trials.
Open trials refer to studies currently accepting participants. Closed trials are not currently enrolling, but may open in the future.
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