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.
People often wonder about how to prepare for medical tests. Each test is different and only your doctor can definitively tell you how to prepare for your blood tests. In what way or manner does drinking coffee before blood tests affect the results. For tests which require pre-test fasting, coffee will affect your blood, your metabolism and your blood test results. Only water is allowed for certain tests, otherwise an inaccurate reading may result. slide 2 of 5.