If a woman has a weakly positive urine occult blood test result, she should be further examined to find out the cause, the main diseases that lead to positive urine occult blood are the following: 1, urinary system diseases, such as kidney stones, hydronephrosis, and bladder inflammation or urinary tract inflammation, etc. 2, gynecological diseases can also lead to urine occult blood, because the distance between the vaginal opening and the urethral opening is very close to each other, which can easily lead to contamination when taking specimens. The vaginal opening and the urethra are very close to each other, which can easily lead to contamination when taking specimens. For example, menstruation and abnormal vaginal bleeding may contaminate the blood into the urine, resulting in the presence of occult blood in the urine test. If you consider that it is related to gynecological inflammation, it is recommended that when you take the specimen, you must first clean the vulva and then leave the middle section of clean urine for testing.