CRP and acute pancreatitis: Serum markers of severity include C-reactive protein (CRP) > 150 mg/L on the third day of symptoms, hematocrit > 44%, and urea > 20 mg/dL.25Resistin (a cytokine secreted by adipocytes) measured on day 3 of an episode of acute pancreatitis appears superior to CRP in predicting disease severity.49