Agreement between Arterial and Capillary pH, pCO₂, and Lactate in Patients in the Emergency Department

Figure 3

Receiver operating characteristic (ROC) curves for the diagnosis of acidosis, hypercapnia, and hyperlactatemia according to capillary samples. (a) Acidosis ROC curve (area under ROC curve = 0.9945). (b) Hypercapnia ROC curve (area under ROC curve = 0.9715). (c) Hyperlactatemia ROC curve (area under ROC curve = 0.9040).

(a)

(b)

(c)