This stool test uses microscopy to identify bacteria, yeasts and parasites that can cause gut problems. Once identified any problematic microbes are then tested in the lab for their sensitivity to natural medicines, to ensure appropriate treatment. Depending on the level of CDSA you choose it can also report on a range of other important markers, such as absorption, inflammation, short chain fatty acid production, hormone metabolism via the gut and Helicobacter pylori status. The cost of a CDSA ranges between $120.00 through to $350.00 depending on the level you choose. The turn around time from the lab is approximately 3 weeks.