Question: what is normal level of leukocyte esterase?
Answer: A normal range in the bloodstream is between 4,500-11,000 WBCs per microliter. A normal range in the urine is lower than in the blood, and may be from 0-5 WBCs per high power field (wbc/hpf). If your doctor suspects you have a UTI, they'll likely ask you to provide a urine sample.