I just found out a friend was diagnosed with diabetes due to a sugar test while their a1c was still in the normal range. We’ve got a long way to go yet with diabetes research.

I mean, it is well known that A1c has a 3 month (usually) lag time assuming no hemolytic states. Could have been just caught early depending on what you mean by sugar test

No they already are in early stage fatty liver. This has been a long time coming and surprises no one. The only surprise is not failing the a1c.

I guess I’m confused, A1c is a measurement used for diabetes, not fatty liver/nafld. Can absolutely be correlated with diabetes and elevated A1c but those are two independent things we seem to be talking about

It's high, like 6.7-6.9. It doesn't make sense to me because that would suggest average blood glucose of over 150, but it's objectively around 120.

There is some genetic variability in the correlation between blood glucose versus HbA1c. The HbA1c test is essentially an integrator of blood glucose level over time but different people have different average red blood cell lifespans.

RBCs life span can vary between humans. That's why hba1c is not always the correct surrogate.