Which of the following is the most appropriate type of instruction to provide to a patient after scheduling them for a fasting blood glucose test?
Advise the patient to eat a light meal before coming for the blood test
Inform the patient they are allowed to have black coffee and toast before the test
Instruct the patient to not eat or drink anything except water for 8-12 hours before the test
Tell the patient to continue with their normal diet and activities before the test