Final answer:
To diagnose pancreatitis, elevated levels of lipase should be looked for.
Step-by-step explanation:
To diagnose pancreatitis, you should be looking for elevated levels of lipase. Lipase is an enzyme produced by the pancreas that helps in the digestion of fats. In cases of pancreatitis, there is inflammation of the pancreas, leading to the release of lipase into the blood. Therefore, measuring the levels of lipase in the blood can help in diagnosing pancreatitis.