Can drinking a can of root beer throw off a car breathalyzer?

The breathalyzer is a simple roadside test the Police use to detect alcohol on the breath, root beer is made in two forms, alcoholic and non alcoholic, the breathalyzer would only detect the alcoholic form, and only 'throw off' if you have drank enough to impair your ability to drive a motor vehicle, one small can would not normally impair your ability to drive.