The test procedure for the leukocytes, or white blood cells, consists of detecting the specific for these cells enzymes. These cells are present in inflammation caused by infection. The color of the reagent zone turns from pink to purple when there is an infection. An increased protein concentration (> 500 mg/dl), an increased Elevated glucose concentration (> 2 g/dl) or an increased antibiotic concentration can lead to incorrect results.
If there is blood in the urine, the corresponding reagent zone changes color from orange to green or dark blue. Blood in the urine is a sign of a serious problem. If the result is positive, contact your doctor. Tests done on women who are menstruating often show positive results.
In most urinary tract infections, nitrites are formed by the respective bacteria (Enterobacteriaceae). One urinary tract infection caused by any of these bacteria will cause the reagent zone to turn pink. Fast, a diet free of vegetables or taking medications containing phenazopyridine can lead to failure produce results.
Proteins in the urine can lead to false positive results for the leukocyte (LEU) parameter. if If there is protein in the urine, the reagent zone changes from yellow to green or blue.