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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?

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

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I recently got a blood glucose and urine glucose test, my results were 0.01g/dL glucose in my urine and a blood glucose of 69mg/dL. Is this worrisome?

I recently got a blood glucose and urine glucose test, my results were 0.01g/dL glucose in my urine and a blood glucose of 69mg/dL. Is this worrisome?

Don't worry, but...: It would be most advisable to stop worrying about the reports on urine & blood glucose, but constantly work on healthy lifestyle without overindulgence & obsession as described in http://formefirst.com/eMagicPowerUHL.html & mulling over Facts of Life-1,2,&3 by clicking BUTTON on Left of www.ForMeFirst.com. Thereby you gain insight on how to live a long happy life because life is aone-way street.. ...Read more

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Help please. Could drinking pepsi max before a blood glucose test effect the results?

Yes it can: Pepsi Max does not contain sugar. Pepsi Zero Sugar (previously known as Diet Pepsi Max & Pepsi Max is sweetened with aspartame. Diarrhea is a possible side effect of aspartame & Sucralose. REF: http://www.livestrong.com/article/450435-diet-soda-diarrhea/ However, some people have a release of insulin after ingesting these artificial sweeteners & this can lead to drop in blood sugar level. ...Read more

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Why am I still losing weight? Stool test was normal no blood no parasite. Did a random glucose test it was normal? Is this cancer? Am I not eating enough? I have been eating healthy and exercising.

Why am I still losing weight? Stool test was normal no blood no parasite. Did a random glucose test it was normal? Is this cancer? Am I not eating enough? I have been eating healthy and exercising.

Visit your PMD: I would suggest a full blood panel, CBC, CMP, and STD check. You may be losing weight for several reasons and they need to be investigated depending on how much weight you have lost. Typically a loss of 10% of your body weight without trying is concerning. ...Read more

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Can I take medication during a blood glucose test?

Can I take medication during a blood glucose test?

Ask: It depends on your medication, some can effect blood glucose. You should ask the lab you are going to. ...Read more

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How could a 21-hour fast affect a blood glucose test?

Abnormal OGTT: Prolonged fasts are often considered around 72 hours, but 8-12 hours is all that's required for an ogtt. The longer the fast, the higher the circulating levels of free fatty acids, which has a negative impact on glucose tolerance. 21 hours may not significantly alter the blood sugar results. If results are really abnormal, repeating the ogtt under proper fasting requirements may be necessary. ...Read more

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My blood glucose test is consistently over 7 is this ok?

My blood glucose test is consistently over 7 is this ok?

If you mean: Your hba1c test, the answer is no. Your sugar is chronically above normal and your risk of dying of a diabetes related problem has increased by 20-40%. Work with your doctor to improve your glucose control. There is no "magic number" where you're suddenly healthy. The lower the better. ...Read more

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What to do if I am going in for a blood glucose test tomorrow. I don't know how they will test this. can you tell me what will happen?

Go in fasting: They're either doing a fasting serum glucose or a glucose tolerance test...either way, you have to go in fasting. They should have TOLD you this! Water or black coffee are OK, but no sugar, fat, or protein. Good luck! ...Read more

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Why are there so many blood glucose test kits advertised for medicare patients?

Why are there so many blood glucose test kits advertised for medicare patients?

Choice : It is about choice and competition in business. Many manufacturers of medical drugs/products contract with insurance companies to get on formulary by way of competing against each other by giving the insurance companies the better deal. Glucometers may have small differences between them making brands slightly different from each other. For some those small details might be important in choosing. ...Read more

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I am non diabetic , should I have a blood glucose test?

I am non diabetic , should I have a blood glucose test?

Diabetes: If you have not had a blood glucose test how can you know whether you do or do not have diabetes.Getting a blood glucose test is simple, quick, and minimally painful for a few seconds. ...Read more

Dr. Cayce Jehaimi
2,588 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. Sheila Smith
131 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