How is H. Pylori best dianosed? Is blood test reliable

Stool or Breath test. An H.Pylori Stool or Urea Breath test are the recommended diagnostic tests. You cannot use a PPI or H2 Blocker within two weeks of testing. A blood test cannot distinguish a new vs old infection.

Related Questions

Is a blood test for H. Pylori reliable?

Yes, initially . The H. Pylori blood test is >90% sensitive and specific for H. Pylori infection in the past. It is best used to diagnose the early/initial stages of infection. The only limitation is that the blood test remains positive for quite a while after successful treatment for H. Pylori, so it should not be used as a marker for eradication. Read more...

Hi, my blood test shows H.pylori (lgA) 25.08, H.pylori (lgG) 11.09 Do I have helicobacter?

H.pylori infection. This is a serology test, which is cheap and convenient to perform. These are antibodies response to H.pylori bacteria, which varies from person to person. It does not means that you have active H,pylori infection. If it is positive it has to be confirmed by endoscopic biopsy or urea breath test (UBT) before starting the treatment. Read more...
Not necessarily. It means that you were at one time infected with H pylori. Being infected with H pylori does not mean that you have any disease due to it. Most people who have the infection, have silent H pylori infection See this site for more info. http://www.mayoclinic.org/diseases-conditions/h-pylori/basics/definition/CON-20030903. Read more...

Can you still have h pylori after having a negative blood test for it?

Early in infection. When a blood antibody test is done early in an h. Pylori infection, the results may be falsely negative because the level of antibodies is too low to measure. Read more...