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A member asked:
What is wrong when your urine comes out black?
A doctor has provided 1 answer
Dark urine: Brown or black urine (not due to myoglobin or bilirubin) may be caused by excessive L-dopa or melanin excretion as well as copper or phenol poisoning. Ingestion of large amounts of rhubarb, fava beans, or aloe can cause dark brownish black urine. More info at http://urology.stanford.edu/about/articles/abnormal_urine.html
Answered 12/30/2014
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