My 2 yr old son tested positive for inflammation in his stool. tested + 2x. doc sending us for more detailed stool tests. what could this be?

Depends on tests,,: This depends on the results of the stool tests and why he was tested in the first place. If he had antibiotics to treat an infection, it could be an opportunistic intestinal infection from the normal bacteria of the gut, but if he got sick after eating, etc., it may be something else. At this point, it's best to wait for the results of the other tests and discuss them with your doctor.