Stool samples can help doctors diagnose some health conditions. Tips for collecting a stool sample include urinating before collecting the sample and using any tools that the sample kit provides.

Can a patient exhibit signs of salmonella poisoning (e.g., nausea, vomiting, diarrhea, and elevated WBCs) and still have a negative stool culture? —Leslie Pryor, MSN, CRNP, Shamong, N.J. The short ...

Qin Rao, MD, is a board-certified physician based in New York City. He currently works as a gastroenterologist and hepatologist at Manhattan Gastroenterology. Diarrhea every morning may be caused by ...