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A member asked:

I pass normal colored urine but it turns black after some time if i leave it in the air. what is the problem?

A doctor has provided 1 answer

Alkaptonuria: It is relatively mild disorder and you could help yourself by taking large doses of vitamin C. Visit this site for info: https://medlineplus.gov/ency/article/001200.htm Wish you good health!

Answered 1/26/2019

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