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A member asked:

If i am allergic to topical iodine, can i have intrevenous iodine for a ct scan with no reaction?

1 doctor answer2 doctors weighed in
Dr. David Rosenthal
Allergy and Immunology 22 years experience
Maybe: Ct contrast agents is usually iodinated and are classifed as either ionic or non-ionic. Some are more allergy-prone than others. Ct scan contrast is totally different than MRI contrast. In contrast, MRI contrast agents usually contains chelated gadolinium. Tell the radiologist about your previous ct scan contract allergic symptoms when getting your mri.
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Last updated Sep 22, 2016

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