The appearance of black stool requires routine stool examination, fecal occult blood test and pathogen examination.
1. Stool routine examination: adult stools are mostly formed soft stools, if black stools appear but the stools are normal in nature, it is considered to be related to eating more meat and a large number of green vegetables, etc.; if it is mucus stool or thin juice stool, it is considered to be caused by enteritis, hemorrhoids, etc. If red blood cell increase, leukocytosis, etc. are observed, it is usually suggestive of enteritis, dysentery, etc. If red blood cell increase and leukocytosis are observed, it is suggestive of enteritis and dysentery.
2. Fecal occult blood test: If the stool is black, occult blood test is needed to observe whether there is gastrointestinal bleeding.
3. Pathogen examination: black stools should be examined for pathogens, which can detect whether there are bacteria, fungi, parasites, etc., and is beneficial to the discovery of bacterial imbalance and adjustment of treatment programs.
If the black stool is not relieved for a long time after dietary adjustments, it is necessary to go to the hospital in time, and under the guidance of a professional physician to carry out targeted examinations in order to make a clear diagnosis.