Pancreatic Workup Guidelines

Core Laboratory Tests for Pancreatic Evaluation

A comprehensive pancreatic workup should include serum amylase or lipase, triglyceride level, calcium level, liver function tests, and C-reactive protein, as recommended by the American Gastroenterological Association 1
Liver function tests, including bilirubin, AST, ALT, and alkaline phosphatase, should be obtained to evaluate for biliary causes of pancreatitis, according to the World Journal of Emergency Surgery 1, 2
Serum triglyceride levels should be measured to rule out hypertriglyceridemia as a cause, with levels >11.3 mmol/L or >1000 mg/dL indicating this etiology, as stated by the World Journal of Emergency Surgery 3
Serum calcium levels should be checked to evaluate for hypercalcemia as a potential cause, as recommended by the American Gastroenterological Association 1

C-reactive protein is the most widely used severity marker, with levels ≥150 mg/L at 48 hours after disease onset indicating severe disease, according to the American Gastroenterological Association and the World Journal of Emergency Surgery 1, 3
Hematocrit >44% represents an independent risk factor for pancreatic necrosis, as stated by the World Journal of Emergency Surgery 3
Blood urea nitrogen >20 mg/dL is an independent predictor of mortality, according to the World Journal of Emergency Surgery 3
Procalcitonin is the most sensitive laboratory test for detection of pancreatic infection, with low values being strong negative predictors of infected necrosis, as recommended by the World Journal of Emergency Surgery and the World Journal of Emergency Surgery 2, 3

CA 19-9 tumor marker should be included when pancreatic malignancy is suspected, as recommended by the National Comprehensive Cancer Network 4, 5
Fasting glucose or HbA1c may be valuable as new-onset diabetes can be an early warning sign of pancreatic cancer, according to the National Comprehensive Cancer Network and Gut 4, 6

Fecal elastase testing is recommended as the first-choice test for suspected exocrine pancreatic insufficiency, as stated by Gut 8, 9

In patients with a single episode of unexplained pancreatitis who are younger than 40 years, extensive laboratory evaluation is not recommended, as advised by the American Gastroenterological Association 1

Initial laboratory tests should be obtained at admission, as recommended by the American Gastroenterological Association and the World Journal of Emergency Surgery 1, 3
CRP should be measured at 48 hours after symptom onset for optimal prognostic value, according to the World Journal of Emergency Surgery and Gut 3, 10