Off to my consultants appointment. But not before a strange call from my GP surgery telling me my blood test result was normal but my theophylline level was 14. I have no ideas what the therapuetic range is and have no idea if 14 is good bad or ugly?? Guess the call came at the right time so I can tell my consultant as he will know. I hope it is all fine as I dont waqnt to ahve to take more tablets or a higher dose as that will jsut make the side effects worse.