History | Previous gall stones |
| Alcohol intake |
| Family history* |
| Drug intake |
| Exposure to known viral causes or prodromal symptoms |
| |
Initial investigations (acute phase) | Pancreatic enzymes in plasma |
Liver function tests |
| Ultrasound of gall bladder |
| |
Follow up investigations (recovery phase) | Fasting plasma lipids |
Fasting plasma calcium |
| Viral antibody titres |
| Repeat biliary ultrasound |
| MRCP |
| CT (helical or multislice with pancreas protocol) |
Further investigations (usually appropriate for recurrent idiopathic acute pancreatitis) | Further ultrasound |
Endoscopic ultrasound |
Autoimmune markers |
| ERCP—bile for crystals-bile and pancreatic cytology |
| ERCP—bile and pancreatic cytology |
| Sphincter of Oddi manometry |
| Pancreatic function tests to exclude chronic pancreatitis |