no
yes
no
yes.
yes
You should be able to drink coffee before a CBC (Complete Blood count) test, unless your doctor ordered additional blood tests and tells you to not drink after midnight (NPO=nothing by mouth).
No you can't have anything. It is a fasting blood test.
if u want black blood
No. You can and should drink red bull before fasting labs. The diet red bull, of course. This is much better for you and will not affect the blood test.
User responses: No. From what I have read caffeine does affect cholesterol levels and/or the way they can be interpreted when reading results of a cholesterol blood test. I would suggest that you be clean of any caffeine - three or more days ahead of time - to obtain a caffeine-free result.Advice seems to vary. Some say that black coffee (no sugar, no milk) is fine. Sources for that listed below.
test
Water. Anything else will affect the glucose levels...including black coffee.