Highly sensitive and specific panel used to evaluate for viral (feline panleukopenia), bacterial (Campylobacter spp., Clostridium spp. toxins, and Salmonella spp.) and protozoal (Giardia spp., Tritrichomonas blagburni (previously T. foetus) and Cryptosporidium spp.) causes for the gastrointestinal signs exhibited by the patient by PCR.