What should I expect before an Angiogram test?

Instructions will vary slightly depending on the type of angiogram you will undergo, but your doctor will explain the procedure to you and give you the chance to ask any questions that you have about the procedure. Then, you will be asked to sign a consent form that gives them permission to do the test. Read the form carefully and definitely ask questions if something is not clear.



It’s important to let your doctor know if you have ever had a reaction to any contrast dye, or if you are allergic to iodine or seafood. Also, tell them if you are sensitive or allergic to any medications, latex, tape, and anesthetic agents (local and general). Now’s the time to disclose any prescriptions, over-the-counter medications, blood clotting/thinning medications, or herbal supplements that you’re taking and whether you have a history of any bleeding disorders.

Before your angiogram, you will need to fast for a certain period of time – this could be several hours or overnight. Because an angiogram involves radiation and/or sedatives, if you are pregnant or suspect that you may be pregnant, discuss with your doctor to make sure it’s wise to do the test. They may request a blood test prior to the procedure to determine how long it takes your blood to clot. Other blood tests may be done as well.

The day of the test, you may receive a sedative prior to the procedure to help you relax. If a sedative is given, you will need someone to drive you home afterwards. Depending on the site used for injection of the contrast dye, the recovery period may last up to 12 to 24 hours so you should be prepared to spend the night if necessary.

The area around the catheter insertion (groin area) may be shaved, and then you’ll be transported to a treatment room for your angiogram. Based upon your medical condition and the specific angiogram that you will be undergoing, your physician may request other specific preparation.