My practice says 12 hours with only water. Sometimes I go for about 14 hours between my last meal and the test. The only thing that bugs me about it is not being able to have my first cup of coffee :lol:
Sorry H.
True about the HbA1c.......
However there are other Blood tests which also DON'T require the Patient to fast.
That's the reason why we need to know exactly what test/s the OP is having done. Sometimes it isn't all about Diabetes, although in this case it MAY be.