What does an ADHD blood test test for? Adderal?

There is no blood test for ADHD. I imagine your Dr was checking a basic chemistry panel just to be sure that your liver and kidneys are healthy. As part of a comprehensive exam you should have a basic chemistry panel and a complete blood count drawn and it is likely this was what he was drawing. Usually they have to inform you if they are testing for drugs so it is unlikely that was what he was doing but if he did then I would come clean and say you tried one of your sisters to see how it affected you. Adderall XR is an extended release medication and should last all day without needing a short acting form. Drs will usually start conservative to see how you react and remember that this drug starts to build up in the blood after a few days so give it at least a week or two before you decide the lower dose doesnt work. He may need to tweak the dose until he finds what is right for you. Adderall XR is a good medicine for ADD/ADHD. It most defintely helps you to focus. I havent felt good since I quit taking it. (I had some insurance problems with it and then I stopped going to the Dr who used to prescribe it and I just havent asked my current Dr to go back to it) Dont increase doses on your own. If the medication doesnt seem to be helping as prescribed then you need to let him know. It is likely that he will work your dose up a bit. He is probably just starting conservative to get you used to the drug. If you take too high a dose when you first start out you can have unpleasant side effects and difficulty sleeping. This medication will kill your appetite when you take it. This is one of the reasons my son, who was on it, quit taking it-he lost too much weight. You might want to keep some high protein drinks like Boost or Ensure to drink as snacks especially before bed so you get plenty of calories. You will notice on days that you dont take it that you will try to eat everything in sight! I lost weight on it but I needed to lose. I gained it all back once I stopped taking the medication.