How do doctors scan for allergies? Like the specific what are they looking for in the body and how.
In: Biology
When I took an allergy test as a child they had a bunch of what looked like needles that had different common allergens on the end. They basically touched the needles to my skin and waited. After a few minutes if the area on the skin reacted,by turning red/swollen like a bug bite then that would be an indicator that you are allergic to that substance. That was probably 30 years ago.
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