Insulin is generally administered either by the patient himself or by some member of his family, a neighbor, a practical nurse or a registered nurse. Only occasionally is it given by the physician.

The places where you inject insulin may depend on the type of syringe or prefilled insulin pen you use. You should rotate these injection sites on your skin each time you inject insulin.

Study design. This prospective, randomized, controlled, parallel-group study compared the use of pen devices with conventional vials and syringes for the administration of insulin in hospitalized ...