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HealthyInPublic t1_itxiwta wrote

Reply to comment by RandomStranger456123 in How an allergy test works by Monkey-Newz

Prick tests always have a positive and negative control. A histamine control should always have a reaction, and a saline control should always have no reaction. My controls were normal.

But “everything” was a tiny hyperbole. I also wasn’t allergic to a couple of other things that I expected to not be allergic to like eggs, soy, etc. so they didn’t cause a reaction.

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KivogtaR t1_ityaqzg wrote

Mine showed I was allergic to soy but the histamine and salt water didn't react.

We had a hunch I was allergic to soy prior to the test, so the test resulted in the doctor saying we can either do the test again or assume I'm allergic to soy and change my diet. The plan of attack wouldn't really change, just asked if I wanted confirmation.

Also, they can't charge me for the misfired test apparently which was nice.

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