In my last post I included a reference to my A1c test results. I realized that unless you have diabetes you probably have no idea what I'm talking about, so here goes.
A1c is short for glychohemoglobin A1c test. It’s a blood test that can tell you what percentage of red blood cells have glucose bound to them at any given time. The test gives a result for about 12 weeks worth of glucose levels and is a reasonable review of how well- or badly-controlled your diabetes is. Non-diabetics will range between 4% and 6%. You're considered to have good control if it's under 7%. The lower it is, the less likely you are to suffer from the many lovely complications diabetes has to offer.
Generally, it’s not used for diagnosing diabetes, but they take it after you’re diagnosed, as a baseline. Mine was 9.7% when I was diagnosed, which still wasn’t as awful as some people when they’re first diagnosed, but it wasn’t good. For a diagnosis of diabetes, I believe a fasting blood sugar above 126 mg/dL gets you into the club for life.