What is the cause of high urinary leucocytes?

There are many reasons for the increase of white blood cells in urine, such as pyelonephritis, cystitis, acute and chronic glomerulonephritis, urethritis and other urinary system infections. The more serious the infection, the higher the white blood cell value. When there is inflammation in the reproductive system of women, secretions can be mixed into urine to cause white blood cells to increase.