In 1871, Mendeleev published his periodic table in a new form, with groups of similar elements arranged in columns rather than in rows, and those columns numbered I to VIII corresponding with the element's oxidation state.
the normal range for WBC in urine is 0 - 5/HPF. Mine was 40 - 50. The best thing to do is to discuss these results with your primary care doctor. White blood cells (WBC) in urine is usually measured in something called a urine analysis (UA) The normal range is 0-5 wbc/hpf, like you mentioned. This test is usually ordered to determine is someone has a urinary tract infection. Often patients will complain of dysuria (pain on urination) or urinary urgency.
Likewise, white blood cells or leukocytes in urine may or may not indicate urine infections. For example, a condition called Interstitial Cystitis in women often leads to increased WBC count in the urine. This condition is characterized by inflammation of the bladder walls.