Fig. 1From: A systematic review and diagnostic test accuracy meta-analysis of the validity of anion gap as a screening tool for hyperlactatemiaForest plot of sensitivity and specificity of the observed AG at thresholds of 12 and 16 mEq/l to detect hyperlactataemia defined as lactate > 2.5 mmol/l (TP true positive, FP false positive, FN false negative, TN true negative, CI confidence interval)Back to article page