Infectious diarrhea is a common and usually self-limited illness. While most patients with infectious causes of diarrhea will get better on their own, there are certain scenarios in which testing is indicated. The The FilmArray gastrointestinal panel is a multiplex PCR test delivering rapid and cost-effective testing results. It is capable of detecting DNA or RNA of 22 pathogens in approximately 1 hour from stool submitted to the laboratory.