A1c in a month? It's usually not particularly helpful to remeasure A1c in less than 30 days because blood cells don't turn over that quickly. Whatever changes h

A1c in a month? It's usually not particularly helpful to remeasure A1c in less than 30 days because blood cells don't turn over that quickly. Whatever changes happened to his blood glucose could only have affected about 1/3rd of the blood cells. If there was real change to his glucose tolerance or uptake, it would take another two months to really know what the effect was.