Several routine stool tests include testing for the presence of red blood cells (RBCs), white blood cells (WBCs) in the stool, bacterial sensitivity tests, occult blood tests (OB), and insect eggs. Routine stool test sheets and urine routine tests will be marked with "-" to represent normal; "±" to represent suspicious results; "+" to represent positive, and "+" to "++++" to represent different degrees of severity. If red and white blood cells are detected in the stool and the level is "+ to ++" or above, it can be considered as bacillary dysentery; if only white blood cells are detected, it indicates enteritis; if only red blood cells are detected, it is mostly a sign of colitis, tumors, polyps, or intestinal tuberculosis and hemorrhoid bleeding, etc. Egg testing can also detect roundworm eggs or tapeworm eggs in the stool. What does the shape change mean? Watery stool is seen in acute enteritis, food poisoning, etc.; stool with a small amount of mucus or egg drop soup-like stool is more common in autumn diarrhea; watery rice swill stool is seen in cholera; adzuki bean soup-like stool is seen in hemorrhagic necrotizing enteritis ; If the stool is green like sea water, it is more common in Staphylococcus aureus enteritis; mucus is common in various intestinal infections and inflammations; pus and blood in the stool are mainly common in bacillary dysentery, amoebic dysentery and some enteritis. In addition, if there is foam in the stool, it means eating too much sugar; if there are more milk flakes, it means incomplete digestion of fat or protein; if there are "oil flowers" floating in the stool, it is mostly caused by eating too much fat and not digesting it. In addition, a positive fecal occult blood test indicates bleeding in the digestive tract; if the result is yin and yang, ulcers are more likely.

Professor Jiang Xiaofeng, member of the Standardization Committee of the Chinese Society for Laboratory Medicine