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What happens before a venogram?

The following steps will precede a venogram:

  • Your physician will explain the procedure to you and offer you the opportunity to ask any questions that you might have about the procedure.
  • You will be asked to sign a consent form that gives your permission to do the test. Read the form carefully and ask questions if something is not clear.
  • Notify your physician if you have ever had a reaction to any contrast dye, or if you are allergic to iodine.
  • Notify your physician if you are sensitive to or are allergic to any medications, latex, tape, and anesthetic agents (local and general).
  • You may be asked to stop eating and/or drinking for at least four hours before the procedure.
  • Notify your physician if you are pregnant or suspect you may be pregnant.
  • Notify your physician of all medications (prescribed and over-the-counter) and herbal supplements that you are taking.
  • Notify your physician if you have a history of bleeding disorders or if you are taking any anticoagulant (blood-thinning) medications, aspirin, or other medications that affect blood clotting. It may be necessary for you to stop these medications prior to the procedure.
  • If a sedative is given before or during the procedure, you may need to have someone drive you home afterwards.
  • Based upon your medical condition, your physician may request other specific preparation.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.