Fig. 3From: High-normal serum carcinoembryonic antigen levels and increased risk of diabetic peripheral neuropathy in type 2 diabetesROC curve exhibiting the capability of serum CEA levels to discriminate DPN (AUC was 0.666 [95% CI 0.617–0.712], optimal cut-off value was ≥ 2.66 ng/mL, Youden index was 0.28, sensitivity was 66.67%, and specificity was 61.00%)Back to article page