Figure 2. Comparison between POC and STAT laboratory (heparin plasma) glucose measurement at t = 0 and t = 120 minutes of oral glucose tolerance test.

(A,C) Deming regression plot for t = 0 and t = 120 minutes and B,D) difference in glucose concentration between methods for t = 0 and t = 120 minutes. Plots depict difference in glucose concentration (POCT minus heparin) as a function of the average glucose concentration (POCT and heparin).