Nitrite is a routine urine test. Patients with elevated nitrite are considered to have a relationship with urinary tract infections. This is because nitrite will only increase after the urine has been stored in the bladder for more than 4 hours, resulting in a positive test result. In addition, it cannot be ruled out that the urine is contaminated, which can also lead to elevated nitrites. Patients are advised to drink more water, eat more vegetables and fruits, and retest the urine, choosing a sterile container. If the result is still positive, the diagnosis of urinary tract infection can be confirmed and the symptoms will be relieved by choosing the right antibiotics. You can choose to have a bacterial culture and then choose the appropriate antibiotic treatment.