Q – Tips: Shellfish and iodine
- Shellfish and radio contrast both contain iodine. However, allergies to shellfish are IgE- mediated with the allergic target being the shellfish protein, not iodine. Allergy to radio contrast is not IgE-mediated but rather, is due to the concentration of the contrast. Some hypersensitive individuals happen to be allergic to both, but one doesn’t lead to the other.