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What happens if there are no nitrites in urine?

What happens if there are no nitrites in urine?

However, even if no nitrites are found, you still may have an infection, because bacteria don’t always change nitrates into nitrites. If you have symptoms of a UTI, your health care provider will also look at other results of your urinalysis, especially the white blood cell count.

What causes leukocytes without nitrates in urine sample?

Some of the most common causes of leukocytes without nitrates in a urine sample are: Pregnancy. In this case, the hormonal and physical changes that normally occur at this stage can increase the risk of having leukocytes in urine; however, if the levels are too high or urinary symptoms occur, then you must immediately seek medical attention.

How are nitrites detected in a urine dipstick test?

Nitrites are generally found in urine due to reduction of nitrates to nitrites by Gram-negative bacteria such as E. coli. The detection of bacteria in urine by nitrite positive dipstick is also dependent on nitrates from the patient’s diet (vegetables) and sufficient bladder incubation time.

What does excess white blood cells in urine mean?

This article will explain what an excess of white blood cells in the urine means, as well as how to treat a UTI. Leukocytes can sometimes show in urine tests. An unusually high number of leukocytes in the urine indicates inflammation or infection along the urinary tract, often in the bladder or kidney. These will show in a urine test.

What do nitrates in urine and leukocytes in urine mean?

What are nitrates in urine. Nitrite and leucocyte esterase are indicators of urinary tract infection. Some bacteria, for example, Enterobacteriaceae, convert nitrates to nitrites. Leukocyte esterase is an enzyme present in most white blood cells. A few white blood cells are normally present in urine and usually give a negative chemical test result.

How does a doctor check for nitrites in urine?

First, your doctor will visually inspect the urine to look for cloudiness — cloudy, red, or brown-colored urine usually means there’s an infection. Second, a dipstick (a thin stick with strips of chemicals) is used to check for a variety of factors, such as the pH, and the presence of protein, white blood cells, or nitrites.

What makes white blood cells convert nitrates to nitrites?

Some bacteria, for example, Enterobacteriaceae, convert nitrates to nitrites. Leukocyte esterase is an enzyme present in most white blood cells. A few white blood cells are normally present in urine and usually give a negative chemical test result.

Where can nitrites be found in the urinary tract?

A UTI can happen anywhere in your urinary tract, including your bladder, ureters, kidneys, and urethra. Harmful bacteria find their way into the urinary tract and reproduce rapidly. Some types of bacteria have an enzyme that converts nitrates into nitrites.