H. pylori

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Latest Edit: Hector 2014-03-24 (EDT)

See Also Lab Tests

This test is used to diagnose an infection with Helicobacter pylori, which can cause peptic ulcers. An H. pylori test may be ordered when a patient presents with symptoms of an ulcer, such as gastrointestinal pain, unexplained weight loss, and nausea or vomiting.[1], [2]


  • H. pylori is a bacteria known to be a major cause of peptic ulcer disease, which acts by decreasing the stomach's ability to produce mucus, thereby making it prone to acid damage and peptic ulcers.
  • It is also associated with gastric (stomach) cancer
  • The test may be conducted from a stool sample or a blood sample.

Patient Preparation

  • Factors which can cause increased levels:
  • None noted.
  • Factors which can cause decreased levels:
Drugs: Antacids

Clinical Implications

Article Helicobacter pylori: Conventional and complementary treatments for eradication and optimal management, IHP, Jun/July 2009
Article Kefir Beats Yogurt in H. pylori Treatment , 2011 May Natural Medicine [1]
  • Results typically indicate a positive or negative test result.
  • Blood tests indicates presence of H.pylori either presently or in the past.
  • Breath test indicates current presence of an H. pylori infecion.

Associated Tests

  • CBC
  • Other indicated tests may include a tissue biopsy of the stomach lining.


  1. Pagana Kathleen D, Pagana Timothy J (2006) Mosby's Manual of Diagnostic and Laboratory Tests, Mosby.
  2. Weatherby Dicken, Ferguson Scott (2002) Blood Chemistry and CBC Analysis: Clinical Laboratory Testing from a Functional Perspective, Bear Mountain.