The nitrite portion of a urinalysis determines the presence of bacteria in the urine.
Nitrites are by-products of nitrogenous waste. The presence of nitrites in urine normally indicates that there is a bacterial infection in the urinary tract.
This infection is generally termed as a urinary tract infection (UTI). A UTI can occur anywhere in the urinary tract, including the bladder, ureters, kidneys, as well as the urethra.
The existence of nitrites in the urine is extremely specific to particular bacterial infections. Nitrites is not produced by all kinds of bacteria. Gram-negative bacteria form urinary nitrite and represent the most ordinary uropathogens.
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