high level of leukocytesleukocyte esterase positiveleukocyte esterase abnormalleukocyte esterase moderateleukocyte esterase negativeleukocyte esterase pregnancyleukocyte esterase urinalysisnormal level of leukocytesleukocyte esterase meaningleukocytes levels in bloodleukocyte esterase urineleukocyte esterase trace