This is the second case-control study to clinically validate the multi- analyte biomarker diagnostic model, PancreaSure. Serum samples will be collected for analysis from patients with pancreatic ductal adenocarcinoma (PDAC) Stages I and II and non-PDAC controls of similar demographics who were at increased risk of PDAC because of their familial or genetic history. Investigators and patients will not receive individual patient results, therefore patient care will not be impacted by test results. Analysis of blood samples will be conducted in Immunovia's laboratory in Durham, NC by personnel who are blinded to subject data. Biomarker results will be analyzed using a predefined (locked) algorithm with predefined (locked) cut-off resulting in a positive/negative test outcome.
