Evaluation of a handheld creatinine measurement device for real-time determination of serum creatinine in radiology departments

Figure 1 Scatter plots, regression equations and correlation coefficients for the correlation for capillary point-of-care serum creatinine vs venous point-of-care serum creatinine for both centres (A), for creatinine values below (B) and above (C) the cut-off-level of 1. 2 mg/dL (venous point-of-care serum creatinine). The Bland-Altman plot for the differences between capillary point-of-care serum creatinine (cSCr) and venous point-of-care serum creatinine (vSCr) for both centres (D).

Figure 2 Scatter plots, regression equations and correlation coefficients for the correlation for capillary point-of-care serum creatinine vs venous point-of-care serum creatinine for centres 1 and device A (A) and device B (B), each before and after implementation of the offset correction. C: The Bland-Altman plot for the differences between capillary point-of-care serum creatinine (cSCr) and venous point-of-care serum creatinine (vSCr) for centre 1 and device A after curve offset correction; D: The Bland-Altman plot for the differences between cSCr vs vSCr for centre 1 and device B after curve offset correction.