Weak positive fecal occult blood suggests that you may suffer from gastritis, peptic ulcer, gastrointestinal tumors and other gastrointestinal bleeding disorders, or it may be related to physiological reasons such as consuming too much animal blood. 1. Digestive bleeding. Fecal occult blood test is to detect the hemoglobin content in the feces, if there is a weak positive, it suggests that hemoglobin is high, which may be related to gastrointestinal bleeding, such as esophageal ulcer, ulcerative colitis, gastric ulcer, hemorrhoids, gastrointestinal tract tumors and other diseases. 2. Physiological reasons. As fecal occult blood test is to detect the hemoglobin content, so the presence of hemoglobin in the feces may affect the results, such as excessive intake of animal blood can lead to increased hemoglobin in the feces, different test methods can appear fecal occult blood weak positive. When fecal occult blood is weakly positive, the cause needs to be further clarified under the guidance of a doctor so that active treatment can be carried out.