Leukocyte Esterase (Urine)
The leukocyte esterase test detects an enzyme released by white blood cells in urine. A positive result suggests white blood cells are present, indicating possible infection.
Category: Urinalysis
Also known as: leukocyte esterase, urine leukocyte esterase, LE, urine LE, leukocyte esterase urine, leukocitna esteraza
Reference range: 0–0 (Source: ABIM)
High values may indicate
Positive leukocyte esterase may indicate urinary tract infection, kidney infection, or inflammation in the urinary tract.
Low values may indicate
Negative leukocyte esterase is normal and indicates no significant white blood cell presence in the urine.
Frequently asked questions
- What is a normal Leukocyte Esterase (Urine) level?
- A typical reference range for Leukocyte Esterase (Urine) is 0–0 (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- Where do Leukocyte Esterase (Urine) reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Leukocyte Esterase (Urine) over time?
- Yes. Upload results from any lab and BloodId charts your Leukocyte Esterase (Urine) over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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Track your Leukocyte Esterase (Urine) over time with BloodId