Hi there, if he has classic cah he should never stop. It’s recommended that adults without problems have labwork done at least once a year. I have to say I have been guilty of waiting longer. Please make sure your son knows how important it is to take his meds though, I know how teenagers can get. You remember the that won’t ever happen to me syndrome :o)

 I hope he does well, but I don’t blame him for being fed up, especially if he has had iffy care. Wouldv’e been nice if he had a doc he could trust and feel safe with. I wish him all the luck. Take care