Figure 1.

Plots of paired differences of SureStep Pro glucose measurements minus primary reference glucose measurements as a function of critical care variables (n = 129). Paired differences versus (A) PO₂, (B) pH, (C) PCO₂, and (D) hematocrit. The PO₂ range was 47–467 mm Hg; PCO₂, 22–80 mm Hg; pH, 6.80–7.55; and hematocrit, 25–54%. Dashed lines represent error tolerances, ± 15 mg/dl for glucose ≤ 100 mg/dl, and ≤ 15% for glucose >100 mg/dl. Reprinted with permission from Archives of Pathology and Laboratory Medicine.³⁹