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Is elevated white blood cells in urine serious?

Sep 13, 2022 Source: Cainiu Health
Dr. Li Mingchuan
Introduction
Elevated white blood cells in urine may be either serious or not. It is considered more serious if there is a urinary tract infection accompanied by symptoms such as fever, frequent urination, urgency, and painful urination, along with significantly increased urine white blood cells and a positive urine culture. However, if there is only a mild urinary tract infection with slight symptoms of frequency and urgency, a mildly elevated white blood cell count in routine urine test, but a normal urine culture result, and no other underlying diseases or clinical symptoms, the condition is less severe.

Elevated white blood cells in urine are commonly seen in urinary and reproductive system diseases. When patients notice that their urinalysis shows high white blood cell levels, they often become concerned. Is elevated urinary white blood cells a serious condition?

Is Elevated Urinary White Blood Cells Serious?

High white blood cell levels in urine may or may not be serious. If it is due to a urinary tract infection accompanied by symptoms such as fever, frequent urination, urgency, or painful urination, with significantly increased white blood cells in urine and a positive urine culture, the condition is considered more serious. However, if there is only mild urinary tract infection with slight symptoms like mild frequency or urgency, a mildly elevated white blood cell count in routine urinalysis, but a normal urine culture result and no underlying medical conditions or other clinical symptoms, then the condition is not serious. In patients who have recently undergone surgery—such as for prostate cancer or bladder cancer—an elevated white blood cell count may appear during postoperative follow-up tests. However, if there are no symptoms such as fever or chills, this situation is generally not considered serious.

Elevated white blood cells in urine usually indicate inflammation in the urinary tract. Urinary system inflammation can be categorized into two types: infectious and non-infectious. Infectious inflammation is primarily caused by pathogenic microorganisms such as bacteria or mycoplasma, and apart from increased white blood cells in urine, sometimes clusters of white blood cells can also be observed. Non-infectious inflammation may occur after procedures such as transurethral prostate or bladder surgery, or following the placement of various catheters—for example, indwelling urinary catheters or ureteral stents—all of which can lead to elevated white blood cells in urine.

It is recommended to drink plenty of water, maintain regular作息 (daily routines), engage in appropriate physical exercise, and promptly follow up with urinalysis as directed by a physician. We hope this response has been helpful to you. Wishing you good health and happiness.

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