The Nurse Is Preparing to Administer Pork Insulin to an Underweight

The nurse is preparing to administer pork insulin to an underweight patient. Which of the following techniques should be observed when planning this therapy? Select all that apply.

A) Inject insulin that is at room temperature.
B) Make sure no air bubbles are present in the syringe.
C) Massage the site of insertion.
D) Rotation injection sites.
E) Insert the needle at a 90-degree angle.