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🌱 來自: diagnostic studies of peptic ulcer disease

H. pylori

• stool Ag, urea breath testing (UBT) or EGD + rapid urease test (RUT) False ⊖ Ag, UBT, RUT if on abx, bismuth, PPI;
• ∴ stop prior to testing if possible Serology: ↓ utility, useful only to exclude infection in lower prevalence areas