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Multiple Choice

AMY: 70 U/L. What is the likely cause?

Amylase level of 70 U/L is within the normal range in most labs. Acute pancreatitis typically causes a marked rise in amylase (often several times the upper limit of normal), so a normal amylase makes pancreatitis unlikely as the cause of acute abdominal symptoms. With a normal amylase, the option most compatible is appendicitis, since it can produce an abdominal pain picture without elevated amylase. The other two conditions—gastritis and cholecystitis—can cause abdominal pain but are not specifically indicated or ruled by amylase levels, and they’re less tightly linked to a normal amylase finding in this context.

Amylase level of 70 U/L is within the normal range in most labs. Acute pancreatitis typically causes a marked rise in amylase (often several times the upper limit of normal), so a normal amylase makes pancreatitis unlikely as the cause of acute abdominal symptoms.

With a normal amylase, the option most compatible is appendicitis, since it can produce an abdominal pain picture without elevated amylase. The other two conditions—gastritis and cholecystitis—can cause abdominal pain but are not specifically indicated or ruled by amylase levels, and they’re less tightly linked to a normal amylase finding in this context.