As stated before, the phenylalanine is not an issue if you do not have PKU as it is an essential amino acid (needed). It's just that in this case, it is not innate to the tea (like it is in milk) but rather the synthetic sweetener. So, no, you need no tests, no treatment, no nothing but you should get off the aspartame...it really isn't good for you. Make your own tea....sweeten with something natural or not at all.
