what are pus cells/
Pus Cells in Urine. 1  The presence of pus cells in the urine indicates an ailment in the body. 2  Pus cells are white blood cells that signify infection in the body, especially if the urine also contains bacteria.  Presence of pus cells in the urine may also be a sign of infection or inflammation in the kidneys and bladder. Since the urine has to pass through the kidneys and the bladder, it may pick up some pus cells from there before voiding.