What is the normal value of vitamin C in urine?

The normal value of total vitamin C in urine is 0.285-0.741mmol/L, and the normal value of reduced vitamin C in urine is 0.171-0.570mmol/L. However, in clinical routine urine examination, it is mainly distinguished by positive, negative and weak positive. This test item has no clear clinical significance and is not used for diagnosis of pathological changes, but as a contrast agent. If this indicator has a positive reaction, the examination of urine dry chemistry items may cause false positive results in occult blood, nitrite and other examination items, which may indicate misdiagnosis of the disease. Therefore, if the result is positive, the disease should be analyzed comprehensively in combination with other examination items and the patient's clinical symptoms.