Final answer:
The gastrointestinal health problem indicated by the laboratory findings is pancreatitis.
Step-by-step explanation:
The gastrointestinal health problem indicated by the laboratory findings of elevated serum amylase and lipase levels and a decreased calcium level is b) Pancreatitis.
Pancreatitis is inflammation of the pancreas, which can lead to the leakage of pancreatic enzymes into the bloodstream. Elevated amylase and lipase levels are indicative of pancreatic damage. The decreased calcium level may be caused by the formation of calcium soaps from the breakdown of fat in pancreatitis.