Sorry if this has been covered. I searched but couldn't find an answer. We have received a bunch of biochemical test results through Dr Yasko. Could someone explain why there is a difference between DD's Comprehensive Stool Analysis Bacteriology Culture measurement and Genova's Gasotrintestinal Function Profile measurement? In our case DD shows, for example, Lactobacillus spp as NG (no growth), but Genova measures it at 4.6 with an 80% reference range of 1.8-7.8, so well within the norm. What does this all mean?