Initializing Vogelview...
Performing medical cross-referencing...
Initializing Vogelview...
Performing medical cross-referencing...
Loading...
Normal negative urine nitrites, combined with negative leukocyte esterase, makes an active bacterial UTI significantly less likely. This combined negative result (negative nitrites AND negative leukocyte esterase) has a high negative predictive value for UTI.
Urine nitrites are produced when certain bacteria convert urinary nitrates to nitrites. Negative urine nitrites means no nitrite-producing bacteria are present in the urine in significant quantities. This is the expected normal result and provides evidence against common gram-negative urinary tract infections.
Good result. No bacterial UTI signal from nitrites. Note that some bacteria (Enterococcus, Staph saprophyticus) do not produce nitrites, so negative nitrites do not completely rule out all UTIs.
Urine Nitrites: negative (ref: negative)Absent nitrites means no nitrite-producing bacteria are detectable in the urine. The dipstick test for nitrites has good specificity for gram-negative UTIs like E. coli, the most common UTI pathogen. A negative result reduces but does not eliminate the possibility of UTI.
Normal result. In the absence of symptoms, no UTI concern. If symptoms are present, a urine culture is more definitive than nitrites alone.
Urine Nitrites: negative (ref: negative)Negative urine nitrites is the normal expected finding. The nitrite test has high specificity — a positive result is reliable — but limited sensitivity, as not all UTI-causing bacteria produce nitrites, and dilute or very fresh urine may miss low bacterial counts.
Normal result.
Urine Nitrites: negative (ref: negative)Normal negative urine nitrites, combined with negative leukocyte esterase, makes an active bacterial UTI significantly less likely. This combined negative result (negative nitrites AND negative leukocyte esterase) has a high negative predictive value for UTI.
Normal screening result. UTI is less likely with both nitrites and leukocyte esterase negative.
Urine Nitrites: negative (ref: negative)Optimally negative urine nitrites means the urinary tract is free of detectable gram-negative bacterial colonization at the concentrations detectable by dipstick. This is the ideal result for urinary tract health.
Good result. Continue good urinary hygiene and hydration.
Urine Nitrites: negative (ref: negative)A trace positive nitrite result may represent a very early or low-density bacterial UTI, a dilute specimen reducing detection sensitivity, or a false positive from prolonged urine incubation at room temperature before testing. This borderline result warrants follow-up, especially if UTI symptoms are present.
If you have UTI symptoms (burning, frequency, urgency), see your doctor for urine culture. If no symptoms, retest with an early morning specimen.
Urine Nitrites: trace positive (ref: negative; borderline: trace)A positive urine nitrite test is a reliable indicator that nitrite-producing bacteria are present in significant quantities in the urine. This is most commonly caused by E. coli or other gram-negative organisms and is consistent with a bacterial urinary tract infection. Combined with a positive leukocyte esterase, the probability of true UTI is very high.
See your doctor. Urine culture and sensitivity testing will confirm the organism and guide antibiotic selection. Do not wait — untreated UTIs can progress to kidney infection (pyelonephritis).
Urine Nitrites: positive (ref: negative; positive: detected)A strongly positive nitrite result indicates heavy bacterial presence in the urine, suggesting active urinary tract infection with potentially large bacterial counts. If accompanied by fever, chills, flank pain, or systemic symptoms, upper UTI (pyelonephritis) or urosepsis should be considered — both are serious conditions requiring prompt treatment.
Seek medical evaluation promptly. With systemic symptoms, urgent evaluation for pyelonephritis or urosepsis is needed. Urine culture, blood cultures if febrile, and antibiotic therapy should be initiated.
Urine Nitrites: strongly positive (ref: negative; critical: strongly positive)Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.