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Medically reviewed by Last updated on Apr 2, 2024.

What do I need to know about venography?

Venography is a test that shows blood flow through a vein. Contrast liquid is used to help the vein show up in x-rays. Venography can be used to find current blood flow problems or the effects of a past problem. Blood flow may be blocked or slowed from inflammation, a tumor, or a blood clot. Venography may be used if other tests cannot find the cause of your health problem. The results will help your healthcare providers make or change treatment plans.

How do I prepare for the test?

What will happen during the test?

Treatment options

The following list of medications are related to or used in the treatment of this condition.

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What should I expect after the test?

What are the risks of venography?

The vein used for the test may be damaged. You may have an allergic reaction to the contrast liquid. Your kidneys may be damaged during the test. You will get radiation from the x-rays. Radiation increases the risk for certain types of cancer. The test may also cause a blood clot to form in your vein. You will need treatment if a clot develops.

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.