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Doctor insights on: Fasting Blood Sugar Test Preparation

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Can Fasting Blood Sugar (FBS) be used for short-term monitoring of blood sugar level?

Can Fasting Blood Sugar (FBS) be used for short-term monitoring of blood sugar level?

FBS: I presume you have type 1 diabetes given your age. My apologies if your doctor has said you have type 2 diabetes and he is correct. Very unlikely unless you are substantially overweight. You should check your blood sugar almost all day if you have type 1 diabetes. There is excellent safe equipment for continuous blood sugar control. Can you please give me some more information about your diabetes. ...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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Random blood sugar test result 375mg/dL repeat test done Fasting Plasma Glucose result 228mg/dL. Am I diabetic?

Random blood sugar test result 375mg/dL repeat test done Fasting Plasma Glucose result 228mg/dL. Am I diabetic?

Yes!: You are def a diabetic. Get a glucose meter and check some fingersticks. Completely NL in the AM fasting is 70-100. 101-125 is borderline, >125 is diabetes. Go see a diabetes doc and get an A1C test. Normal is up to 5.7. Pre-diabetic is 5.7 - 6.4. Diabetes is >6.4. Check out this link from the NIH: http://diabetes.niddk.nih.gov/dm/pubs/A1CTest/A1C_Test_DM_508.pdf. You need diabetic tx! ...Read more

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Is a random glucose blood sugar test accurate to diagnose diabetes?

Is a random glucose blood sugar test accurate to diagnose diabetes?

Random glucose >200: The ADA has set criteria for the diagnosis of diabetes as a patient with classic symptoms of hyperglycemia and a random glucose blood glucose > 200mg/dL http://www.diabetes.org/diabetes-basics/diagnosis/ ...Read more

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Is smoking during fasting hours before fasting blood test increases the blood sugar in the test?

Is smoking during fasting hours before fasting blood test increases the blood sugar in the test?

It shouldn't: Smoking a cigarette before a blood test should not increase your sugar level. Thus, i would discuss with your doctor why your sugar was elevated as this may be the first sign of diabetes. Good luck! ...Read more

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Which test is more reliable for monitoring diabetes: a blood sugar test or urine sugar test?

Which test is more reliable for monitoring diabetes: a blood sugar test or urine sugar test?

Bllod sugar: Glucose appears in urine only when blood sugar is greater than (debate) 180-220. Would like to aim for sugars 80-150 for good control. So can still be in 150-180 range, chronically, and still be in less than ideal control without any sugar appearing in urine. ...Read more

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Diabetes2 acceptable fasting and after meal blood sugars?

Diabetes2 acceptable fasting and  after meal  blood sugars?

Diabetes Control: Fasting under 100 is normal, treated under 120 is pretty good, over 140 not so good. 2 hours after meals normal is 140 to 150 and good control is the same , add 10-20 or so. Many people manage looser but i try to get better control without risking low blood sugars which can be very bad so be careful and work with your doctor closely. ...Read more

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What is normal fasting blood sugar level fbs?

What is normal fasting blood sugar level fbs?

Normal FBS: Between 65-99 mg/dl - impaired fasting glucose (ifg), prediabetes, is between 100-125 mg/ dl. Fbs of 126 mg/dl or higher is in the diabetic range. ...Read more

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Is satisfactory blood glucose meter readings good?

Is satisfactory blood glucose meter readings good?

Yes: A good quality glucometer may not be as accurate and a true blood test but it is a great and very precise mode of checking you sugar on a daily basis ...Read more

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Is 6.5 fasting blood sugar bad?

Is 6.5 fasting blood sugar bad?

A1c: The 6.5 is not a sugar level but reflects how well your blood sugar is being controlled. It is best known as a1c which reflects uptake of sugar on your red blood cells. 6.5 is an ok number but don't get higher. ...Read more

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Is 74 low fasting blood sugar during pregnancy?

Normal: Blood sugars typically run lower during pregnancy. 74 is a normal reading whether you are pregnant or not. ...Read more

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Are random blood sugar test for glucose accurate for diagnosing diabetes?

Are random blood sugar test for glucose accurate for diagnosing diabetes?

Not ideal: There are multiple tests for diabetes but preferred are fasting glucose and hemoglobin A1c levels. Generally, these are tested on two separate occasions to confirm the diagnosis unless the numbers are way out of range. Non-fasting glucose with symptoms suggestive of diabetes can be reliable. Take care. ...Read more

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Will 4 grams of sugar affect fasting blood glucose?

Do you have diabetes: If you have diabetes the more sugar you take the higher your blood sugar is likely to be. If you don't have diabetes it is likely that 4 grams of sugar won't affect your diabetes. Why are you taking 4 grams of sugar? Are you really weighing it? ...Read more

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I am prediabetic with higher blood sugar and insulin levels. L just had a 3 hour glucose tolerance test. Fasting sugar is 63, insulin is 2. Meaning?

I am prediabetic with higher blood sugar and insulin levels. L just had a 3 hour glucose tolerance test. Fasting sugar is 63, insulin is 2. Meaning?

Doesn't matter: The numbers aren't really important or valuable. If you're overweight and have high glucose (particularly with a positive family history) you need education, diet, exercise, weight reductio and maybe medication -- not just a diagnosis. The diagnosis doesn't help you get healthier. ...Read more

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Fasting blood sugar 75. Is that good?

Yes: Your fasting blood sugar should be less than 90 and above 60 in a healthy adult. ...Read more

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Can blood sugar level rise after introducing insulin?

Can blood sugar level rise after introducing insulin?

No: Insulin specifically lowers blood sugar. The only other thing to do that is physical activity. Your diabetes may worsen over time, or your weight may increase -- both of which can lead to higher blood sugars. ...Read more

Dr. Melissa Haglund
154 doctors shared insights

Fasting Blood Sugar (Definition)

Fasting blood sugar is blood level of blood glucose after fasting(not eating) for 8 to 10 hours.Normal range ...Read more