H Pylori, Stool


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Quest Diagnostics Test Code: 34838

The H Pylori Stool Test is used to establish the presence of Helicobacter Pylori (H Pylori).

H Pylori is a bacteria commonly found in the stomach. It weakens the stomach’s natural protective lining making it more susceptible to damage from gastric acid. This can lead to the development of ulcers and in time, increase the risk of developing stomach cancer. Symptoms of H Pylori typically include heartburn, nausea, gas, stomach or abdominal pain, bloating, voting and indigestion.

There are several ways to test for H Pylori. The H Pylori Stool Test looks for the presence of antigens that signal the immune system to fight infections. Stool testing is considered one of the preferred methods of detecting a current infection or determining if treatment was effective by the American College of Gastroenterology (ACG).

An H Pylori IgG Antibody blood test looks for antibodies which the body develops in response to infection. These antibodies will typically be present if a person has had a recent or past infection and may remain detectable 12-18 months after treatment. The H Pylori IgA Antibody blood test looks for a different type of antibody which may not develop in all people. This test can help identify infection in people who only develop IgG antibodies in very low levels. An H Pylori Breath Test can be more effective for people who are determining if their treatment was successful or have had previous H Pylori infections since it does not rely on the presence of antibodies to establish if the bacteria is present.

This test typically sees results in 1-2 business days.


For initial diagnostic purposes, no special preparation is required. Customers are not required to be off of medications or to fast before this test. While positive test results from customers taking agents such as proton pump inhibitors and antimicrobials should be considered accurate, false negative results may be obtained. For this reason, physicians may suggest the customer go off medications for two weeks and repeat the test if negative results are obtained. To confirm eradication, testing should be done at least 4 weeks following the completion of treatment. However, a positive test result 7 days post-therapy is indicative of treatment failure. People ordering the H Pylori, Stool Test should go to the lab to obtain a proper specimen container prior to collection.


Specimen Collected
  • Stool
Estimated Time Taken

This test typically sees results in 1-2 business days.