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A 25-year-old male asked:

What can be the possible causes of urine turning black when exposed to air. is it normal? can uti cause urine to turn black after standing for long?

1 doctor answer4 doctors weighed in
Dr. Gurmukh Singh
Pathology 50 years experience
Alkaptonuria: A relatively benign metabolic disorder, Alkaptonuria is a likely cause. Taking vitamin C would help. Visit this site for info: https://medlineplus.gov/ency/article/001200.htm
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Last updated May 31, 2019


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