Assertion: carbon monoxide's effect | /r/Causes | alteration
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text: The most serious adverse effect documented in healthy volunteers was an allergic reaction in 2 out of 136 volunteers, both of which did not decompensate to full anaphylaxis.57,59,60 Hydroxycobalamin can cause alterations in laboratory values, including elevated renal and hepatic function and uninterpretable dipstick urinalysis.