A urine test for vitamin C is 0. This is normal and not a cause for concern. The vast majority of urine tests, vitamin C is (-), if there is a large amount of vitamin C in the urine, it suggests that the body is supplementing too much vitamin C every day, which is not effectively used and absorbed by the body, and should be reduced. All normal conditions, there is usually no vitamin C in the urine test, if there is vitamin C, it is abnormal. We are advised to control the amount of vitamin C supplementation properly under normal circumstances. Excessive supplementation of vitamin C may lead to increased incidence of stones and other diseases, and it is recommended that all foods, should be properly supplemented.