Re: 1st week BG numbers and likelihood/benefits of medicatio
DaveNN said:
So, one if them is wrong..both of them are wrong..or one is right, the other is right or both are right!
Nothing wrong Dave, and you have a better result than I did. I was 7.6mmol/L fasting but 8.7% hba1c which is somewhere in the 70s.
They are measuring different things and your hba1c contains much of your past 3 months history, when you weren't cutting back.
The fasting tests measure the level in the blood plasma. Like alcohol it exists in the plasma in a solution form and goes up or down depending on what you eat or drink within a short period of time. Also in blood plasma are red and white blood cells. White blood cells are part of your immune system. Red blood cells carry things like oxygen, or carbon monoxide which is always a giveaway for smokers and, if your glucose remains in your plasma, some of it will bond with your red blood cells too. The hba1c measures how much glycogen has bonded with the haemoglobin in your red cells. Once bonded, it remains bonded for the life of the cell. It doesn't go up and down until the cells are replaced.
Red cells do eventually get replaced. It's a continuous process but the cycle is roughly 10 - 12 weeks so your current hba1c reading probably has about 9 week's worth of red cells that still contain glycogen that bonded before you started dieting. Your 5.1 mmol/L fasting shows that now, your plasma has less glucose so that means less will bond with new cells during the next few weeks. You should therefore, in 3 months time, have new slimline, sugar free cells
Well, a lower hba1c anyway.
You have every reason to be encouraged because your home meter readings show that your BG responds to diet and exercise. In 3 months this should be reflected in your hba1c.