@Lynnzhealth I do get an A1C every 3-6 months, depends who I see when! Fasting has nothing to do with A1C and your sugar level at that exact moment has nothing to do with an A1C test. It is an average over about 3 months of what your sugars are.
So if your sugars are low at that moment, it won't matter on an A1C, however sometimes they will test your glucose level at the same time and that will show low. But you can drink some OJ before you go in to raise your level if needed, keeping in mind to not to go too high as that will show on a standard glucose check too.
And then of course they like to do other tests half the time at the same time of your A1C test and what you eat can make a difference in those tests! Although a little sip of OJ usually won't matter.