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Type 2 Fasting BG and hba1c results

Discussion in 'Ask A Question' started by Captaindiamond, Mar 23, 2021.

  1. Captaindiamond

    Captaindiamond · Member

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    Is there any relationship between the 2 that is useful. If you consistently have a 6.2 reading each morning would you expect that your hba1c would come in higher than that figure. If so how can you best estimate what your hba1c might be.
     
  2. Hotpepper20000

    Hotpepper20000 · Well-Known Member

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    Before and after eating numbers are important as well, to get a full picture.
    There are Apps that will estimate your A1C if you put in enough data.
     
  3. Ronancastled

    Ronancastled Type 2 · Well-Known Member

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    Well, FBG is always seen as a baseline the body likes to get back to.
    A healthy non-diabetic could expect to be back to pre-meal levels about 3-4 hours after eating.
    So if your baseline is low then your HbA1c should be lower too.

    A low FBG can also mask large spikes which many people have after eating heavy carb meals.
    The HbA1c might be in the normal range but only cause their fasting state smooths out the averages.
     
  4. Ronancastled

    Ronancastled Type 2 · Well-Known Member

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    Great advice.
    If you know your fasting, 1 hour, 2 hour & 3 hour values over a typical day you can make a good stab at your HbA1c.
    Divide your day in 24 slots & input your estimated average BG for each hour period.
    Add them up & divide by 24.
    That should give your an average BG over a typical day.
    Then use the chart below or one of the online convertors to estimate your A1c.

    [​IMG]

    I did it & it matched my lab result perfectly, was well chuffed.
     
  5. Hotpepper20000

    Hotpepper20000 · Well-Known Member

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    I use mySugr App and it calculates the A1C.
    My lab work is is usually within one or two points. Of course it’s only as good as the amount of information a person puts in.
     
  6. Captaindiamond

    Captaindiamond · Member

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    Hi. When you worked out your own average did you then use the chart by looking at your average reading on bottom line and then reading HBA1c on top line or were you converting from 2nd line down
     
  7. Ronancastled

    Ronancastled Type 2 · Well-Known Member

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    My meter showed glucose reading in mmol/L (UK Standard) so I worked out my average reading over a 24 hour period was 5.7mmol/L. Then I read upwards on the chart to see my HbA1c which was 33 (5.2% in old money). Simple as that.
     
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