Measuring low cobalamin concentrations in the presence of excess (greater than 20-100-fold) cobalamin analog, cobinamide: a survey.
D003038:Cobamides / Q000097:blood*; D006801:Humans; D014805:Vitamin B 12 / Q000097:blood*
D003038:Cobamides; C017142:cobinamide; D014805:Vitamin B 12