Stool ova and parasite test
Stool PCR or multiplex gastrointestinal pathogen panel
Blood tests for eosinophilia
Serologic tests for specific parasites
Pancreatic function tests
Abdominal ultrasound
Contrast-enhanced CT scan of the abdomen
MRI or MRCP
Endoscopic ultrasound
ERCP with pancreatic duct sampling
Duodenal aspirate or pancreatic fluid analysis
Parasite-specific antigen testing
Biopsy or cytology if a mass or cyst is present
Infectious disease or gastroenterology consultation