A white coffee made out of vending machines can defintiely raise blood levels. THink it is someting to do with the whitener powder in them. Don't think it has anything to do with spouts, as most of them just pour hot water into the powdered drink.
Also depends of course what type of coffee you are having a milky one from starbucks will raise me, and also the nice vanilla ones from M&S....oops showing a bit of naughtiness there!!!!
Normal instant coffee in homes doesn't raise mine, or coffee machines at home either...