A positive gastric fluid occult blood test means that the examination of gastric fluid reveals the presence of a blood component, which is usually associated with gastrointestinal bleeding, but some positive gastric fluid occult blood tests are caused by other factors. It is usually necessary to cooperate with the doctor for further examination to clarify the specific cause. 1. Gastric fluid occult blood test is a test that analyzes the gastric fluid to determine whether there is blood in the gastric fluid, and can detect bleeding that cannot be seen by the naked eye. A positive occult blood test indicates that there may be gastrointestinal bleeding, such as esophageal bleeding, gastric bleeding or duodenal bleeding. 2. Positive gastric fluid occult blood test may also have other factors, such as bleeding gums or mouth ulcers are more serious, there will also be a small amount of blood mixed in the sample, so that the test results show positive, so need to do a gastroscopy, a clear diagnosis. Gastroscopy allows a clear view of the mucous membrane of the upper gastrointestinal tract and determines which part of the mucous membrane is present in the case of ruptured bleeding. Positive gastric fluid occult blood test during the examination needs to actively cooperate with the doctor, if there is a lesion to consult the doctor in time to clarify the cause, follow the doctor’s instructions to choose targeted treatment.