If a woman does not have a problem with urine tests, she needs to undergo further tests to clarify the cause of frequent urination, which can be caused by numerous reasons: 1. Psychological factors can cause frequent urination. The first thing you need to do is to take a look at the actual site and see if there is any improvement in the frequency of urination. 2. If the urinary tract is irritated, such as stones or tumors, there may be no positive findings on urinalysis, but there may be frequent urination. Further ultrasound or CT of the urinary system and, if necessary, cystoscopy should be performed to rule out any relevant mucosal irritants causing frequent urination.