Nope, they only need to know what you have taken recently that has potential to mess with you during anesthesia.
I would stop taking the supps like squat said and make sure you take NOTHING at all. No supps, no aspirin, no painkillers, no coumadin/warfarin, and no rec drugs.
They will not detect such things in lab work as that is not what they are looking for. They are basically doing pre blood work to detect your blood counts as well as iron.