My son has been on Foacalin XR since he was 4 and he is now 6 1/2. I'm thinking I should ask for some test to be run to make sure everything is right internally. Liver, heart, etc... I've read many post lately making reference to testing. Should I ask our pedi to do this or does the doctor that prescribes the med handle this? The psychiatrist has never made mention of the need...I'm just feeling it might be a good idea to do so. Any thoughts out there?