A salmonella antigen test is a rapid diagnostic test that can be used to detect the presence of Salmonella antigens in stool samples. Salmonella is a type of bacteria that can cause foodborne illness. The salmonella antigen test is a simple and painless procedure that is usually performed in a doctor's office or a laboratory. The patient will need to have a stool sample collected. The sample is then placed on a test strip that contains antibodies that bind to Salmonella antigens. If the antigens are present in the stool sample, they will bind to the antibodies and form a visible line on the test strip. The results of the salmonella antigen test are usually available within minutes. A positive test result indicates that Salmonella antigens are present in the stool sample. This means that the person may have Salmonella infection. A negative test result indicates that Salmonella antigens are not present in the stool sample. This does not necessarily mean that the person does not have Salmonella infection, as the test may not be sensitive enough to detect all cases of infection. The salmonella antigen test is not a perfect test. It can sometimes give false-positive or false-negative results. False-positive results mean that the test indicates that Salmonella antigens are present when they are not. False-negative results mean that the test indicates that Salmonella antigens are not present when they are. The salmonella antigen test is a valuable tool for diagnosing Salmonella infection, but it should be used in conjunction with other diagnostic tests, such as a culture of the stool sample. Here are some of the reasons why your doctor might order a salmonella antigen test: You have symptoms of food poisoning, such as fever, diarrhea, and abdominal cramps. You have been exposed to Salmonella bacteria, such as by eating contaminated food. You have a history of Salmonella infection. If you have a salmonella antigen test, it is important to follow your doctor's instructions. This may include taking antibiotics or other medications.