Gastrointestinal viruses are the most common causes of gastroenteritis with symptoms such as watery diarrhea, vomiting, fever, nausea, weakness in general, abdominal pain. The chosen sample for testing is a stool sample that is tested for the four most common pathogens: rotaviruses, noroviruses, adenoviruses and astroviruses. The most simple way of testing is with immunochromatographic tests due to the quick results and economic profitability. Result check can be done with more sensitive methods such as ELISA, PCR and multiplex molecular tests, that will detect lower concentrations of the causative agent. Gastrointestinal viruses cause gastroenteritis throughout the whole year, while rotaviruses, noroviruses and astroviruses mainly cause epidemics in colder periods of the year. Infections are present in all age groups, but especially in people with a weakened immune system where they cause more severe clinical symptoms. Treatment of gastroenteritis is symptomatic and special attention is paid to fluid and electrolyte replacement. It is recomended that the best way of prevention is regular desinfection of hands and work surfaces and using safe water and food.