Fasting Blood Sugar Definition

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Blood Sugar Tests

A test that measures blood sugar levels. Elevated levels are associated with diabetes and insulin resistance, in which the body cannot properly handle sugar (e.g. obesity). Goal values: Less than 100 mg/dL = normal Between 110–125 mg/dL = impaired fasting glucose (i.e., prediabetes) Greater than 126 mg/dL on two or more samples = diabetes Preparation This test requires a 12-hour fast. You should wait to eat and/or take a hypoglycemic agent (insulin or oral medication) until after test has been drawn, unless told otherwise. Eating and digesting foods called carbohydrates forms glucose (blood sugar). Glucose is needed by your body to provide energy to carry out your normal activities. Insulin is needed by the body to allow glucose to go into the cells and be used as energy. Without insulin, the levels of glucose in the blood will rise. Diabetes is a disease that occurs when either the pancreas (an organ in your body) is not able to produce insulin or the pancreas makes insulin, but it does not work as it should. Fasting blood sugar is a part of diabetic evaluation and management. An FBS greater than 126 mg/dL on more than one occasion usually indicates diabetes. Glycosylated Hemogl Continue reading >>

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Popular Questions

  1. energy

    What are the NORMAL 1-hr, 2-hrs and 3-hrs post meal blood sugar levels for the NON-diabetics?

    Editor's Note: Also read Is My Blood Sugar Normal? and HbA1c: Everything You Need to Know.
    Except for this one on Blood Sugar 101 web site I have not seen any scientific research on this topic although this question often comes up in forums about the diabetes. Anytime this subject comes up we go back to this single study in the reference.
    I cannot imagine this is a very difficult and expensive study to conduct and am certain that more of such studies have already been done a number of times by the scientific community, but perhaps we cannot see them openly in the Internet because of the copyright issues.
    So, what are the numbers you have seen for the NORMAL 1-hr, 2-hrs and 3-hrs post meal blood sugar levels for NON-diabetics? It would be helpful if you could tell us where you got your numbers from.

  2. furball64801

    Good question and as you said we go by a few references. I can go by a few I have tested at family parties when we were back home. Some were over 140 two hours after I dont have a 1 hr data but most if not all were back down to 100 by the 3 hr mark. It was a very small about 4 person study on my part, the meals were pretty carb loaded so have to go with that also. It shows how many carbs people eat and dont realize it, I was really cutting back at that point.

  3. jwags

    The only other place I have seen this discussed is in Dr Bernsteins book. When he discussed Normal non diabetics he says they usually stay within the range 80-100. He says occasionally they will spike as high as 140 or 160 but that is very rare. The reason for this is that their basal insulin is working correctly. So as soon as they eat they have insulin on board to deal with what they just ate and never spike high. Also their Phase 1 insulin response works the way it is supposed to work.

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