how accurate a1c test
Manufacturers of A1C tests now have to prove that their tests are consistent with those used in a major diabetes study. Even more recently, accurate home test kits have become available for purchase. Accuracy is relative, however, when it comes to A1C or even blood glucose tests.The A1C test result can be up to half a percent higher or lower than the actual percentage. That means if your A1C is 6, it might indicate a range from 5.5 to 6.5.o even if you have a high fasting blood sugar, your overall blood sugars may be normal, or vice versa. A normal fasting blood sugar may not eliminate the possibility of type 2 diabetes. This is why A1C tests are now being used for diagnosis and screening of prediabetes.