The blood test is the least accurate test for h. pylori, and can't tell between current active infection vs. past infection.
Breath test is supposedly one of the best tests, although if it missed it for you then I think you may need to do the biopsy again to know for sure...
More info about
Chronic Lyme, Bart., Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut dysmotility & non-specific inflammation, Lupus, Osteoporosis, etc.; G-Tube; TPN-dependent
Meds: Flagyl, Cefazolin, Zofran, Essential Oils, etc.