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Could I be allergic to X-ray dye?

Some procedures for diagnosis and treatment of cardiovascular disease use contrast dye. Angiograms are one example. These diagnostic tests rely on a special type of X-ray dye to help your physician gather images of your blood vessels and identify any life-threatening blockages.

It is possible to be allergic to the contrast dye. If you have a known allergy to shellfish, iodine or X-ray dye, you should let your physician know. The contrast dye typically used during the angiogram procedure contains iodine. Some patients may have a minor reaction to the X-ray dye, such as a skin rash or itching. The chance of a life-threatening reaction to the dye is very small.

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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.