My sons tests came back low. The lab doesn't classify things as negative. Doctor wanted to put my son under and do scopes down his throat and up his butt to check. I declined that at this point, you don't have to agree or do everything a doctor says. I'm not risking my son never waking up. So instead we are doing a drink and some x rays of his intestines and another medicine to get rid of anything left over from c.dif. But just knowing my son most likely doesn't have anything serious makes me so happy. My prayers have been answered.