When preparing to administer insulin, what should the nurse do first?

When preparing to administer insulin, the priority action is to check the client's blood glucose level. This step is crucial because it informs the nurse of the patient's current blood sugar status, which determines the need for insulin administration. If the blood glucose is already low, administering insulin could lead to hypoglycemia.

This action not only ensures patient safety but also aligns with clinical protocols that dictate insulin should be given based on specific blood glucose targets. Once the blood glucose level has been assessed, the nurse can decide the appropriate type and dosage of insulin to be administered.

While steps like withdrawing insulin or verifying the dosage are important in the insulin administration process, they should occur after confirming the patient's blood glucose level. This practice is essential in the management of diabetes and in preventing potential complications related to insulin therapy.