Leukocyte LEU, it means simply, LEU is the abbreviation for white blood cells in the urine. The urine is tested for white blood cells and red blood cells, and white blood cells are LEU. A high number of white blood cells, it indicates inflammation in the urine, and if it is negative, it indicates that there is no urinary tract infection, or it has improved significantly after treatment. It is recommended that if you have symptoms of urinary tract infection, you should have a routine urine test, which is mainly to assess what the number of LEU is. If the number is high, the more serious the infection is; if the number is low, the infection is very mild. If the infection is serious, it needs to be treated with antibacterial agents; if the infection is mild, drinking more water and taking Chinese medicine will soon provide relief.