Which of the following clinical laboratory tests is useful for diagnosis of peptic ulcer disease (PUD)?
A) Basal acid output and IgM
B) Serum measurement of IgM and CagA
C) Serum measurement of IgA, IgG, and cytotoxin-associated gene A (CagA)
D) Alpha -1-antitrypsin

Question

Quizplus · Accepted Answer

Serum measurement of IgA, IgG, and cytotoxin-associated gene A (CagA) is useful for the diagnosis of peptic ulcer disease (PUD) because these markers are associated with Helicobacter pylori infection, a common cause of PUD.

Which of the Following Clinical Laboratory Tests Is Useful for Diagnosis