Lipase levels drop back to normal within a couple days of an attack, and
sometimes with advanced chronic pancreatitis
, amylase and lipase levels do not elevate at all, even during an attack. This often makes bloodtests not always accurate in diagnosing chronic pancreatitis. Triglyceride levels should be checked and or a trypsinogen study done. There are also the diagnostic tools of ultrasound, CT-scan, or MRI's. And, of course, the ERCP.