3 doctors weighed in:
Is it possible to test neg for hpylori but test positive for a past infection and what does this mean? Do I have hpylori?
3 doctors weighed in

Dr. Jason Hemming
Internal Medicine - Gastroenterology
1 doctor agrees
In brief: Yes
Blood work will tell if one has been exposed to hpylori but can't destinguish old from active infections.
Breath test, stool studies or egd with biopsy can determine active infection.

In brief: Yes
Blood work will tell if one has been exposed to hpylori but can't destinguish old from active infections.
Breath test, stool studies or egd with biopsy can determine active infection.
Dr. Jason Hemming
Dr. Jason Hemming
Thank
Dr. Colin Kerr
Family Medicine
In brief: H pylori infection
There are 4 tests for h pylori: a blood test, stool test, breath test, and biopsy.
When you say you tested + for past infection, I am assuming you are using the antibody test (iga, igg, igm). After treatment, the IgG antibody goes down by about half, but does not go away completely. High levels of IgM are the best predictor of current or recent infection.

In brief: H pylori infection
There are 4 tests for h pylori: a blood test, stool test, breath test, and biopsy.
When you say you tested + for past infection, I am assuming you are using the antibody test (iga, igg, igm). After treatment, the IgG antibody goes down by about half, but does not go away completely. High levels of IgM are the best predictor of current or recent infection.
Dr. Colin Kerr
Dr. Colin Kerr
Thank
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