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Atopy patch testing had a higher degree of specificity but less sensitivity than skin prick testing and radioallergosorbent test in detection of allergens triggering atopic dermatitis.
Some physicians prefer to use a blood test called the radioallergosorbent test, or RAST, to diagnose food allergies.
Male sex, a positive skin-prick or radioallergosorbent test (RAST), and the presence of other atopic diseases are correlated with eosinophilic esophagitis.