Nitrite (Urine)
The urine nitrite test detects the presence of nitrites in urine. Certain bacteria that cause urinary tract infections convert nitrates to nitrites.
Category: Urinalysis
Also known as: nitrite, urine nitrite, nitrites urine, nitriti
High values may indicate
Positive urine nitrite strongly suggests a bacterial urinary tract infection, particularly from gram-negative bacteria like E. coli.
Low values may indicate
Negative urine nitrite is normal but does not completely rule out a UTI, as some bacteria do not produce nitrites.
Frequently asked questions
- Where do Nitrite (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 Nitrite (Urine) over time?
- Yes. Upload results from any lab and BloodId charts your Nitrite (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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