Urine vitamin C weak positive suggests that may dietary intake of more vitamin C, such as consumption of more vegetables, fruits, etc., can also be seen in the taking of more vitamin C preparations of drugs, etc., such as infusion or oral vitamin C preparations, which can be manifested in the urine as vitamin C weak positive, but it is not a representative of a certain disease state. Vitamin C in urine is only used as a comparative reference agent, because if the vitamin C content in urine is increased, it can cause some items to appear false-positive results in the process of urinalysis, because vitamin C and the test reagents have a redox reaction, which may reduce the latent blood and nitrite in the urine to a positive result, so there is an elevated vitamin C content in the urine to appear weakly positive or Positive results, at the same time occult blood or nitrite for positive, to be considered as vitamin C content is too high and lead to redox reaction false positive results, at this time can not judge must be the state of the disease. Vitamin C in urine is used as a comparative reference agent and does not indicate disease.