Hi All, My GP has arranged for me to have a cortisol test, to check my adrenal function. It seems this test can ONLY be done between 8 and 9am, no other time will do. This presents a huge problem for me as I don't rise until late morning, early afternoon. And when I first wake I am incapable of functioning. Because I also suffer from insomnia, I am considering staying up all night just to make this test. Yes, I will be a wreck, but I will be more of a wreck if I fall asleep then have to get up early (in fact, it won't happen) Is anyone able to tell me if doing this, staying up all night, will skew the text in any way? I obviously don't want this to happen but seriously, there's no way I can get up for such an early appointment. I haven't seem 8am in twenty years. This is the only GP who has ever suggested checking my adrenal glands, so I really want to make it to this appointment! Thanks in advance.