United States Embassy Pristina Security Message for U.S. Citizens: Heightened Caution During Religio. Senator John McCainâs Remarks to the Assembly of Kosovo. Thank you, Mister Speaker, Mister Prime Minister, and dear friends for that kind reception and for the honor of addressing this Assembly.
If you drink black coffee, with no additives, you can still have fasting labs done. However, coffee will increase your blood pressure and affect some tests .... especially a CRP. Your paying for these tests. I would recommend no coffee 10-12 hours prior if your not sure. The best method is to call the laboratory.
I have been told that you can have plain water for all blood sugar tests, that is this case fasting only applies to food and not water. If your blood sugar is high, its a good idea to get the HbA1c done, and also the glucose tolerance test too. Its a good idea to let your doctor know you had the tic tac, just in case there are other tests that were done on that blood draw.