Nitrite
The Nitrite test measures the presence of nitrites in urine, which can indicate a urinary tract infection (UTI). Clinicians typically order this test when a patient presents symptoms such as frequent urination, burning sensation during urination, or cloudy urine. The Nitrite test is particularly useful as nitrites are produced when bacteria that cause UTIs convert nitrates, normally found in urine, into nitrites. This diagnostic test can help in confirming a UTI diagnosis, guiding appropriate treatment decisions.
Test Essentials
Specimen Required
Urine (24 hrs)
Test Category
Hematology
Turnaround Time
Results for the Nitrite test are typically available within 24–48 hours after the sample collection.
Clinical Information
Clinical Significance
Abnormal results in the Nitrite test, particularly a positive result, may indicate a urinary tract infection caused by bacteria capable of converting nitrates to nitrites. However, a negative result does not entirely rule out a UTI, as not all bacteria produce nitrites. The diagnostic value of the Nitrite test lies in its ability to detect infections early, but only a healthcare provider can interpret the results in the context of your overall health and symptoms.
Reference Ranges
Reference ranges for the Nitrite test can vary depending on the laboratory methods used and individual factors such as age and sex. Generally, a negative result indicates no nitrites present, while a positive result suggests the possibility of a urinary tract infection. It's important to discuss your specific results with your healthcare provider for accurate interpretation.
Sample Preparation
Before your Nitrite test, there are generally no specific preparations required. You do not need to fast or alter your usual medications. However, it is advisable to inform your healthcare provider about any medications you are taking, as certain antibiotics may affect the test results. Ensure that you provide a complete 24-hour urine sample for accurate results.
Frequently Asked Questions
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