Black urine

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1980 English Publisher:Oxford University Press (OUP)Journal:Postgraduate Medical Journal, volume 56, pages 877-878 (issn: 0032-5473, eissn: 1469-0756,

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Authors: P, Altmann; M A, Mansell;

doi: 10.1136/pgmj.56.662.877

pmid: 7267503

pmc: PMC2424830

Black urine

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Abstract

AbstractA patient is described in whom spontaneous blackening of the urine, due to melanin formation, resulted from treatment with alpha-methyldopa. The colour change became apparent only after the correction of a severe postoperative hyponatraemic alkalosis, the urinary pH had become alkaline, as melanin formation in acid urine is very slow.

Keywords

Melanins, Postoperative Complications, Humans, Female, Methyldopa, Hydrogen-Ion Concentration, Middle Aged, Urine, Hyponatremia

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