Can I Drink Black Coffee Before My Blood Test

Drinking coffee and eating are OK before some blood tests but not others and some doctors say any black coffee at all before is OK even before a.

Can i drink black coffee before my blood test. Fast for eight to 12 hours before having your blood drawn. If thyroid blood test is the only test you are having coffee is not likely to materially affect the results. If you need to fast from water as well make sure you drink enough water the night before a blood test.

And you probably know the drill. Fasting before blood tests. Even if you drink it black coffee can interfere with fasting glucose test blood results.

You need only plain water without added vitamins flavoring or carbonation to achieve the correct fluid and electrolyte balance in your blood chemistry prior to fasting labs. Originally Posted by Cora1003. Is having black coffee fasting.

Answer 1 of 5. For best results avoid drinking all non-water beverages for the recommended amount of time before your test. Having high triglycerides level also makes coffee absence for 9 to 12 hours before the test significant.

Even if you drink it black coffee can interfere with blood test results. Yes black coffee or black tea are ok. This is a new dr.

But it wont affect the a1c even if. I have a blood draw in the morning i start fasting at midnight can i drink black coffee. There are also studies that say that black coffee before a blood test can lead to clinically insignificant changes.