The difference between iron sorbitol-citric acid and iron dextran is that the former: (A) Cannot be injected i.v., (B) Is not bound to transferrin in plasma, (C) Is not excreted in urine, (D) Produces fewer side effects
Answer is A. (Ref: KDT 6/e p586) Iron sorbitol citrate should not be used i.v. because it may rapidly saturate the transferrin receptors and can result in high concentrations of free iron.