FIGURE 2.

Parkes consensus error grid (for type 1 diabetes mellitus) of (A) a portable blood glucose monitor, (B) a flash glucose monitoring system, and (C) combined tabulated results. Zones are categorized as follows: (a) no effect on clinical action; (b) altered clinical action unlikely to affect outcome; (c) altered clinical action likely to affect clinical outcome; (d) altered clinical action could have substantial medical risk; and (e) altered clinical action could have dangerous consequence. Based on the ISO 15197:2013 criteria, ≥99% of the measured glucose results should fall within zones a and b