ient eats carbohydrates 4. which of the following statements is accurate regarding insulin administration? a. vials of insulin may be stored in the freezer to extend their shelf life. b. if the rapid-acting insulin ordered is unavailable, it is safe to substitute an alternative rapid-acting insulin. c. vials of insulin must be inspected before each use for changes in appearance. d. all insulin must be shaken before use to redistribute particles within the suspension. 5. to prevent hypoglycemia and enhance efficacy, it is appropriate to give rapid-acting insulin how many minutes before the next meal? a. 5 to 15 minutes b. 30 to 40 minutes c. 60 to 90 minutes