Stool tests are performed by taking stools and selecting areas where there is mucus, pus, blood, etc. and sending them for testing in a timely manner. Stool examination is to detect the presence of white blood cells, red blood cells, parasites, fungi and other abnormal components in the stool, and generally the presence of such components is usually accompanied by bloody stools, mucus, dilute stools, and abnormal colors, etc. Therefore, when conducting a stool examination, you should try to select areas with mucus, pus and blood, and areas that are abnormal to normal feces in order to have accurate results. During stool collection, specimen boxes, paper cups, cotton swabs and other substances provided by the hospital need to be used and should be sent for examination immediately. When the results of the stool test are abnormal, it is recommended to seek medical attention to clarify the cause under the guidance of the doctor in order to treat it aggressively.