Citrulline and Faecal Elastase 1 as a Combined Diagnostic Biomarker for Pancreatic Ductal Adenocarcinoma
This study demonstrates that combining plasma citrulline levels with faecal elastase-1 testing significantly improves the diagnostic accuracy for pancreatic ductal adenocarcinoma in symptomatic patients, achieving a combined AUC of 0.96 compared to 0.67 for faecal elastase-1 alone.