The nurse obtains a fingerstick blood glucose using a bedside glucose meter for a client with a prescribed sliding scale insulin protocol. The meter indicates 56 mg/dL (3.12 mmol/L). Which intervention should the nurse implement first?

Document the glucose reading in the electronic medical record (EMR) as the only action needed.

Collect a blood specimen by venipuncture to send to the laboratory for serum glucose analysis.

Prepare the prescribed dose of rapid-acting insulin from the sliding scale instructions.

Give the client six ounces (180 mL) of non-diet carbonated soda and instruct the client to drink it entirely.