I just came back from taking the Bacterial Overgrowth test at UNC - it came back negative. THe test consisted of fasting from midnight until the test. The test took 2 hours. At 8:30 I blew into a bag to test my 'hydrogen level' - then I drank sucrose water. Every 15 minutes after that, I blew into a bag until 10:30. At that point the technician told me I do not have bacterial overgrowth. My baseline number (at 8:30) was 9 and it went down to 2 by 10:30.I wanted to have the test done - as I am IBS-d with severe pain 7/24 and hypomania (falling asleep at the drop of a hat) unless I take an antidepressant (Remeron). My severe symptoms showed up after this chain events: several apparent food poisonings, my first and horrible yeast infection, a miscarriage, 3 sinus infections - then about 3 weeks later, the pain and urgent diarrhea hit the scene.It is clear to me I have had IBS a long time but thought it was nothing or just lactose intolerance or celiac disease etc.I tellyou all these details not to bore you but for history - I will be happy to answer any other questions or add anything that I may have forgotten about the tes.