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General Critical Care

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Dark purple urine secondary to Hydroxycobolamin!


Noor Ali Shah
Noor Ali Shah
Aug 18

Hydroxocobalamin chelates cyanide and forms the nontoxic, renally excreted cyanocobalamin. A common side effect of hydroxocobalamin is a stunning dark red/purple discoloration of the recipient's skin, mucosal membranes, and body fluids, including plasma and urine.


As smoke inhalation victims often demonstrate concomitant carbon monoxide and cyanide toxicities, initial blood gas measurements should be obtained prior to hydroxocobalamin administration.

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