Figure 1From: Positive serum specific IgE has a short half-life in patients with penicillin allergy and reversal does not always indicate toleranceAlgorithm for inclusion criteria. 29 patients included for the estimation of T½ of specific IgE to penicillins. 22 patients included in penicillin challenge in patients with previous IgE sensitization to penicillins. A total of 50 individuals were included, since 3 subjects were included in both the penicillin challenge in patients with previous IgE sensitization to penicillin and in the estimation of T½ of specific IgE to penicillins. IgE: Immunoglobulin E, T1/2: half-life for specific IgE to penicillins.Back to article page