Glucose (Post Lunch) (Blood) Test

A glucose test is a type of blood test used to determine the amount of glucose in the blood. It is mainly used in screening for prediabetes or diabetes. Patients are instructed not to consume anything but water during the fasting period. Caffeine will also distort the results. If the person eats during the period in which he or she is supposed to have been fasting then they may show blood sugar levels that may cause his or her doctor to think the person has or is at increased risk of having diabetes. In people already having diabetes, blood glucose monitoring is used with frequent intervals in the management of the condition.

Blood glucose tests are either random or fasting tests. For a fasting blood glucose test, you can’t eat or drink anything but water for eight hours before your test. You may want to schedule a fasting glucose test first thing in the morning so you don’t have to fast during the day. You may eat and drink before a random glucose test. Fasting tests are more common because they provide more accurate results and are easier to interpret. Before your test, tell your doctor about the medications you’re taking, including prescriptions, over-the-counter drugs, and herbal supplements. Certain medications can affect blood glucose levels.

A blood glucose test measures the amount of a sugar called glucose in a sample of your blood. Glucose is a major source of energy for most cells of the body, including brain cells.

Usually they draw blood from your vein or a finger prick If it's from vein An alcohol pad is used to clean the skin. A needle is then injected through the part of rinsed skin into to your vein; specifically in the one that can be seen from the skin. The blood is dragged out from the needle by a nozzle, saved in a vessel and sealed with your name. This sample s carried to the research laboratory for examination. After the procedure, once blood is collected stored in a vessel for further testing.