What does positive urine nitrite mean

Positive urine nitrite usually appears in the urinary system examination report. When a person is infected with Gram-negative bacteria or has some other inflammation, positive nitrite is likely to appear. It has relatively important clinical significance, such as pyelonephritis caused by Escherichia coli, urinary tract infection, etc. If such an examination occurs, you must drink more water to avoid concentrated urine.

Clinical significance

1. Its positive rate depends on the urine remaining in the bladder for more than 4 hours, and the positive rate can reach 80%. A positive result indicates that there are more than 100,000 bacteria/ml in the urine.

2. Positive results of urine nitrite are commonly seen in: pyelonephritis caused by Escherichia coli, the positive rate of which accounts for more than two-thirds of the total; symptomatic or asymptomatic urinary tract infection, cystitis, bacteriuria, etc. caused by Escherichia coli and other Enterobacteriaceae bacteria.

3. A negative urine nitrite test does not mean that there is no bacterial infection. It is just that urinary tract infections caused by certain bacteria that do not have the ability to reduce nitrates cannot show a positive result. Such bacteria include non-fermenting bacteria such as Acinetobacter or urine cannot be retained in the bladder for more than 4 hours.

4. Note: If the bacteria of urinary tract infection cannot reduce nitrate to nitrite, or the urine stays in the bladder for a short time, or there is a lack of nitrate in the urine, a negative result will also be produced.

Daily Health

1. A positive nitrite test result is usually caused by drinking less water and concentrated urine, and is generally not pathological. You can recheck the 8 urine items to see if there are any abnormalities. Drink more boiled water. You can take Panax notoginseng tablets when necessary. You can recover after conditioning. I hope my answer is helpful to you and I wish you a speedy recovery.

2. When bathing, be sure to use a shower instead of a tub, pay attention to hygiene, change underwear frequently, eat less spicy food, keep clean, and avoid cross infection.

Diagnosis of urinary tract infection requires urine bacterial culture, which takes a long time and certain conditions. However, qualitative analysis of urine nitrite can quickly obtain a result and screen for the disease, which can be used to analyze whether there are problems such as urinary tract infection and bacteriuria.