I ate and drank before my blood test?

Probably. You need to tell your doctor exactly what you ate and drank in the 12 hrs before your test (the time you were supposed to fast). You may need to repeat your test. Fasting is required for some tests, such as blood sugar tests, to get accurate results. It is very important to follow your doctor's instructions, so that he can give you an accurate diagnosis and appropriate treatment if necessary. As someone else said, when you have to fast before a blood test, it is best to have the blood test done first thing in the morning.