A blood glucose test measures the amount of sugar in the blood. According to MedlinePlus, glucose is the major energy source for the body. Carbohydrates breakdown into glucose during the digestion process. A doctor may order a blood glucose test if a person shows signs of diabetes. Symptoms include lightheadedness, frequent urination, blurred vision and persistent thirst. A doctor may also request a blood glucose test if a person experiences fainting spells or has seizures.
Step 1
Schedule an appointment with your physician to discuss the need for a blood glucose test. Your physician will refer you to a lab where the test is performed.
Step 2
Ask your physician which type of blood test you will have. A fasting blood glucose test requires at least eight hours of fasting prior to drawing blood. A random glucose test can be taken at any time of day; however, it may be affected by when and what you eat or drink.
Step 3
Arrive at the lab for your scheduled blood draw. A phlebotomist cleans the area of your lower arm where the needle will be inserted.
Step 4
Tighten your fist on the arm where blood will be drawn as the phlebotomist applies the tourniquet around your arm. This will help fill the veins with blood. The phlebotomist then inserts a needle into the vein.
Step 5
Relax your fist as blood filters into the sterile tube. Upon completion, the phlebotomist removes the needle and applies pressure to the insertion site. The tourniquet is removed as well.
Step 6
Await your test results. Your physician should have the results of your blood glucose test within a few days. He will interpret them and proceed with the proper steps depending on the results.
Tips and Warnings
- If you tend to get queasy, bring along crackers or juice to help settle your stomach after a blood draw. Let the phlebotomist know if you are feeling faint prior to, during or after the test. He can recline your chair and remain with you until the feeling subsides.
- It is important to work with a health-care professional when testing blood glucose levels. If the results lead to a diagnosis of diabetes, work with your physician to discuss ways to manage the disease. Left untreated, diabetes can lead to serious complications including kidney damage, vision problems, heart-related issues and nerve damage.
Things You'll Need
- Doctor's appointment
