If you read our post on Monday about the caffeine levels of different types of brew, you'll recall that decaf coffee is not completely caffeine-free -- it does have a slight content level, but considerably less than other types of coffee. If you're sensitive to caffeine and are strictly a decaf drinker, you might be interested in these caffeine test strips. According to the manufacturer's website, up to 30% of the coffee you drink out in the world is not actually decaf, and their handy new strips will help you tell the difference well before you feel the heart pumping! We haven't tried them yet -- but if you do, please let us know what you think!