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Doctor insights on: Fasting Blood Glucose Test Results

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Can a fasting blood glucose test alone tell you if you have diabetes?

Can a fasting blood glucose test alone tell you if you have diabetes?

Yes, absolutely: Hi. Yes, a fasting serum glucose is easily diagnostic of diabetes. There are 4 means of diagnosing diabetes: fasting serum glucose, random serum glucose, 2-hr glucose tolerance test, and A1c. Fasting glucose is an easy test, and if positive, should be repeated for confirmation. Eat healthily and exercise regularly. Keep your diabetes, blood pressure, and lipids well controlled. DON'T SMOKE! ...Read more

Blood Sugar (Definition)

The blood sugar concentration or blood glucose level is the amount of glucose (sugar) present in the blood of a human or animal. The body naturally tightly regulates blood glucose levels as a part of metabolic homeostasis. Glucose is the primary source of energy for the body's cells, and blood lipids (in the form of fats and oils) are primarily ...Read more


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Can a fasting blood glucose test alone tell you that you have diabetes?

Can a fasting blood glucose test alone tell you that you have diabetes?

Needs confirmation: A single fasting blood sugar over 125 needs confirmatory tests to diagnose diabetes. this can be a second fasting blood sugar over 125, or a Hemoglobin A1c test over 6.5%. However any sugar over 300, or any sugar over 200 associated with vision change, excessive thirst or urination, or weight loss while eating more than usual is diagnostic for diabetes without a need for confirmatory testing. ...Read more

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Had a fasting blood glucose test, had a tiny bit of oj before, could that have affected the numbers?

Had a fasting blood glucose test, had a tiny bit of oj before, could that have affected the numbers?

It was not fasting: Even small amount of oj means you were not fasting. Repeat the test without drinking any caloric beverage. U can drink plain water though. ...Read more

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Went to gp complaining of repeated colds and been given a fasting blood glucose test? Is that even relevant?

Diabetes: Yes, if you have pre-diabetes or diabetes your immune function is weakened. There must be something the doctor is concerned about beyond just a simple cold. ...Read more

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What to do if I had a fasting blood glucose test and have been told it was high, I now have to have a hba1c on tuesday?

What to do if I had a fasting blood glucose test and have been told it was high, I now have to have a hba1c on tuesday?

HbA1c: This is a blood test that tells the doctor how well your blood sugar has been controlled over the last 3 months. If you had a high fasting sugar and your A1c is very high then you will know that you have diabetes and it is not well-controlled. If you have a low / normal A1c then you probably just starting to develop diabetes and can treat it with diet and exercise first. ...Read more

Dr. Cayce Jehaimi
2,569 doctors shared insights

Glucose (Definition)

Glucose is the basic sugar molecule and the source of energy throughout the living kingdom. We are programmed to easily detect it by taste in our foods as it is desirable but can be overdone with the modern diet. It gets out of control ...Read more


Dr. M. Hytham Beck
129 doctors shared insights

Blood Sugar Monitoring (Definition)

Blood glucose monitoring refers to the ongoing measurement of blood sugar (glucose). Monitoring can be done at any time using a portable ...Read more