1. Higher amylase concentration in blood: pancreatic enzymes are mainly secreted by the pancreas and enter the blood circulation. Relatively speaking, blood amylase content is higher, and testing blood amylase can more directly reflect the activity level of pancreatic enzymes.

2, lower concentration of amylase in urine: amylase is filtered in the glomerulus, and under normal circumstances, the renal tubules are completely reabsorbed, the concentration of amylase in urine is low, and the measurement of urinary amylase requires more sensitive methods and equipment.