Urine leukocyte 25, which refers to the use of a microscope to observe a urine specimen, has a number of 25 leukocytes per high-powered field of view. Normally, a number of leukocytes greater than 10 per high-powered field of view suggests the presence of a urinary tract infection. In the case of a urine sedimentation test, greater than 5 per high-powered field of view suggests the presence of a urinary tract infection. So a urine leukocyte count of 25 suggests the presence of a urinary tract infection with a leukocyte index over the limit and requires further treatment. It is also necessary to further retain clean urine from the middle section for urine culture examination and to select the appropriate antimicrobial treatment by the pathogenic bacteria examined by urine culture. The quinolone antibiotics can also be selected empirically for treatment. The patient also needs to be further asked if there are symptoms related to urinary frequency, urinary urgency, painful urination, etc. If necessary, an examination of the external genitalia is needed. If necessary, external genital examination is required. For example, men need to be checked for the presence of circumcision, glansitis, etc., and women need to be checked for gynecological inflammation, etc.