Positive esterases are most often seen in gynecological bacterial infections. Leukocyte esterase is an oxidative enzyme found in leukocytes (neutrophils) and is only present in neutrophils and can be released when neutrophils are destroyed. If the test is weakly positive for leukocyte esterase, the urine or leucorrhea contains neutrophils, which means that the body is inflamed, but this does not indicate what pathogenic infection is present. If the test is routine leukocytes, this indicates bacterial vaginitis, which mainly includes vaginitis caused by bacterial infections such as gonococcus, streptococcus and E. coli. If the test is a routine urine test, this indicates the presence of white blood cells in the urine, which is evidence of infection of the urinary system, such as cystitis and urethritis. In this case, anti-infection treatment should be given. In conclusion, if the leukocyte esterase is weakly positive when you go to the hospital, this proves that there is an inflammatory infection in the body and you should have antiseptic, anti-inflammatory and anti-infective treatment.