I order tests, but it depends on several factors as to how often.
Guy with a criminal record, showing impulsivity and antisocial traits, I tend to order them more. (In fact patients with a high risk background, I only give them stimulants if they tested (+) for ADHD on psychological testing that is difficult to fake the results such as a TOVA test, they got an EKG, and tried at least one medication for ADHD that is not a stimulant such as Wellbutrin). Guy with ADHD, doing well in school, no criminal record, and seemingly trying to do his best, I tend to order them less.
In Ohio, there's something called OARRS. It allows a doctor to find out every single medication a patient is receiving from every single doctor in the state. If a patient is on more than one medication of possible abuse from multiple doctors, unless they are all different meds being prescribed appropriately, I tell them they can no longer be my patient.
I put all my Suboxone patients on drug screens and OARRS routinely unless they've showed successful treatment and a desire to continue to do well for several months. Then after that, I still do it, but instead of monthly, I may drop it to every few months, possibly even less depending on how well they did and their progress.
