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Common Test-Ordering Errors
Part 7: Overordered Microbiology Tests

Helicobacter pylori IgM
Stool Ova & Parasites

Helicobacter pylori

Slide 5

October 2010

Helicobacter pylori  is a causative agent of chronic active gastritis, duodenal ulcer, and nonulcer dyspepsia. The serology test for Helicobacter pylori, especially IgM, is overordered, in the opinion of our microbiologists and infectious disease physicians.  A number of methods are available for the diagnosis of Helicobacter pylori infection. In addition to the available serologic tests (IgG, IgM, and IgA), H pylori tests include the stool antigen test, the urea breath test, and tests performed on biopsy specimens obtained by endoscopy. The tissue tests include culture, microscopic examination and direct urease testing (also referred to as the CLO test). Each of these tests has its drawbacks, including, for serology—lack of specificity, or for the breath test and endoscopy—high cost and complexity, and inconvenience for the patient.

Helicobacter pylori


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