Simultaneous intradermal testing with hymenoptera venoms is safe and more efficient than sequential testing

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BackgroundAccording to current guidelines, skin testing for hymenoptera venom allergy should be performed in a stepwise manner, maintaining 15- to 20-min intervals between the injections of venom. Given the long-winded procedure of sequential skin testing, we retrospectively explored the safety of simultaneous intradermal testing.MethodsFour hundred and seventy-eight consecutive patients with a convincing history of an anaphylactic reaction after a hymenoptera sting were tested. All venom concentrations (0.02 ml of 0.001, 0.01, 0.1, and 1.0 μg/ml of honey bee and wasp venom) were administered simultaneously to the skin.ResultsFour hundred and seventy-two (98.7%) patients tolerated the simultaneous intradermal test without any side-effects. Only three subjects (0.6%) had a presumed allergic reaction during the test; another three reactions were considered vasovagal.ConclusionOur skin test protocol with four simultaneously injected concentrations of two hymenoptera venoms is safe and permits the investigator to draw rapid conclusions about the individual's sensitization pattern.

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