Leukocytes, also known as white blood cells, are a central part of the immune system. They help to protect the body against foreign substances, microbes, and infectious diseases. These cells are produced or stored in various locations throughout the body, including the thymus, spleen, lymph nodes, and bone marrow.

High leukocyte levels suggest that the body is trying to fight an infection


Leukocytes can occur in urine for various reasons.


Bladder infections:

  • Kidney stones

  • Kidney infection

  • Urinary system blockage

  • Holding in urine



  • shivering and fever

  • lower back and side pain

  • acute pelvic pain

  • nausea or vomiting

  • long-term pelvic pain

  • painful sex



Treatment for leukocytes in the urine depends on the cause and if there is an infection. For some conditions, such as a bacterial UTI, antibiotic therapy will clear up the infection relatively quickly. For more severe infections or those that will not resolve easily, more in-depth medical treatment may be needed. In some cases, hospitalization may be necessary. Lifestyle changes can help reduce the symptoms of some conditions that cause leukocytes to enter the urine.