In investigating whether or not a person has prediabetes or diabetes, a doctor usually relies on the outcomes of some particular glucose tests.
Although the traditionally favored methods are Fasting Plasma Glucose (FPG) test and Oral Glucose Tolerance Test (OGTT), Many studies show that haemoglobin A1C or HbA1c test is a better test for prediabetes.
In case you have pre-diabetes and you go for Fasting blood glucose test, it isn’t necessary that FBG will be in prediabic range from 100 to 125mg/dl all of the times. Sometimes you may get readings even below than 100 where you’ll not be labeled as prediabetic, and you’ll remain as normal. however this is not so. However if you’re a prediabetic patient, and you go for HBA1c% test, everytime you will get same values of HbA1c over time.
So why is it that your FPG is already back to normal however HbA1c remains to be prediabetic? For FPG, the test measures the blood glucose or sugar levels after fasting for about 12hours. Outcomes could also be differ from lab to lab / day to day and are also affected whether or not the blood sample was collected while in the morning or afternoon. The time between drawing of the blood sample to lab testing may also be a factor. Sometimes, exercise can even matter.Then again, HbA1c measures how high your blood glucose has been on average over the last 8-12 weeks which implies a total average level over about three months.
In short, FPG is like a “on the spot” test of how much glucose is in your blood but HbA1c is like how well your blood glucose’s quality control over a long-term which is why HbA1c needs to be the preferred test for prediabetes.
What’s HbA1c Test: Haemoglobin (Hemoglobin) A1c test or HbA1c test is a blood test which reveals the average blood glucose levels over a period of about 8 to 12 weeks or 2 to three months, which is the lifetime of a average red blood cell.
Haemoglobin is the colour pigment in the red blood cells that carries oxygen around the body. Glucose attaches to this pigment to make a “glycosylated haemoglobin” molecule referred to as haemoglobin A1C or HbA1C. Subsequently, the higher the haemoglobin A1C or HbA1c percentage, the higher the glucose within the blood.on general, a non-diabetic person’s HbA1c preferrred results ought to be lower than 5.5%. A level above 7% shows diabetes and levels between 5.5 to 6.9% are considered prediabetes.
To know more about Pre Diabetes and HbA1C and High Blood Pressure Causes Please visit these hyperlinks.
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