Fig. 2From: Outcome of a de-labelling algorithm compared with results of penicillin (β-lactam) allergy testingOutcome of the de-labelling algorithm applied to the medical history of 800 consecutive cases with suspected penicillin allergy. In 595 cases, β-lactam hypersensitivity could be definitely excluded through negative challenge testing, allergic β-lactam hypersensitivity was proven in 205 cases by positive results of skin or challenge testingBack to article page