Salmonellosis shares its symptoms, such as diarrhea, fever, and abdominal cramps, with several other illnesses. Therefore, confirming Salmonella infection is carried out by culturing the stool sample of the suspected individual in a laboratory.

The doctor may, sometimes, need to specifically ask for these tests failing which they may not be done. Once Salmonella is detected, further tests are carried out to classify it according to its type in order to determine the type of medications that need to be administered.

Routine investigations like a full blood count, blood chemistry and an Ultrasound of the abdomen may also be ordered to rule out any other pathology and also to decide on the treatment that need to be administered.