A lot of our symptoms are similar to the H. Pylori ones. I have done a H Pylori blood test which came back negative, but apparently those tests, and the stool tests, are known to have a low detection rate.
The breath test, and the more invasive gastroscopic sample test directly from the stomach have >98% detection rate. Have anyone tried one of those?
On a side note, I've also taken a histamine allergy test which came back positive. The histamine allergy symptoms are very similar to what I'm experiencing, like blocked nose, burning skin on legs and arms, sneezing and the heart racing. I don't see the link between PATM reactions and histamine allergy though.