Figure 4: [A] Scatter diagram and regression line of inter-method comparison between homologous calibration (rBBN) and heterologous calibration (WHO). [B] Scatter diagram and regression line of inter-method comparison between hmCLIA and ImmunoCAP.[C] Dilution linearity study, using the pooled serum sample and a pool of control serum samples as diluent. Dotted lines represent the 99% confidence interval. [D] ROC analysis representing the area under the curve (AUC). Sensitivity and specificity of the hmCLIA as compared against ImmunoCAP for penicillin G (n = 65 values).