Testing for iron allergy involves a detailed medical history and allergy workup. The allergy workup includes skin tests (skin prick tests, intradermal test and DPT).
Since a standardized extract for in vivo tests is not currently commercially available, skin prick tests or intradermal tests with iron solutions are used. However, it's important to be aware that these tests may lead to skin pigmentation that may persist for a long time.
Here's a breakdown of the process:
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Detailed Medical History: The doctor will ask about your medical history and any previous allergic reactions you've experienced.
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Allergy Workup: This typically includes skin testing.
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Skin Prick Test: A small amount of iron solution is pricked into the skin.
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Intradermal Test: A small amount of iron solution is injected into the skin.
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DPT (likely Delayed Patch Test): This test might involve applying an iron solution to a patch and placing the patch on the skin for a period of time to observe for a delayed reaction.
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Observation: The skin is observed for any signs of an allergic reaction, such as redness, swelling, or itching.
Important Consideration: Be aware that skin prick tests or intradermal tests using iron solutions may lead to skin pigmentation that can last for a considerable amount of time.
