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Leukocyte Esterase

Urine_hematology Unit: Urine test

Enzyme from WBC; indirect infection marker

Also known as: Urine LE

Reference Ranges

Clinical Reference

Positive = WBC present; UTI marker

Related Conditions

Urinary Tract Infection High

Food & Lifestyle Recommendations

🍎 Food Stay hydrated and urinate frequently to help clear the infection Frequent voiding reduces bacterial load in the bladder

Evidence-Backed Supplements

When High

  • Probiotics Tier A May Decrease

    Moderate evidence; probiotics prevent UTIs, reducing leukocyte esterase positivity.

    Multi-strain probiotic (Lactobacillus + Bifidobacterium) 5–50 billion CFU/day Morning on empty stomach
    PMID 36001877 PMID 25927096 PMID 32128794

Questions to Ask Your Doctor

  • Should I have a urine culture done to confirm an infection? Positive LE + nitrites = UTI likely; urine culture identifies the specific bacteria and antibiotic sensitivity.

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