Widely Disparate TSH Levels
I recently was diagnosed with hypothyroidism, and I'm trying to find information on my particular situation, which seems to be less common. I'm in my early 30s, thin all my life, in overall good health, and my diagnosis was made after some routine blood tests with a new doctor, not because of any symptoms (he always tests TSH in all his female patients, which I understand is unusual).
This was my first result, with normal ranges in brackets. This was done at 8:30am, after a 12-hour fast:
TSH 30.3 [.2 - 5.5]
Dr. immediately diagnosed me as hypo, and gave me a prescription for .50 mcg of Levo. All my other tests came back excellent, including chloresterol levels. My body temperature was a little low, and I am a bit tired (but I also work full time and go to grad school full time, so tired is sort of part of the game).
Not wanting to start any medication without at least a confirmation, I badgered him into doing another test, and also testing my T4 levels (having done some crash research). He refused to test T3 or antibodies, insisting that they were never needed.
These were my second results, taken exactly 1 week later. Test was done at the same lab, at 4:00pm, no fasting, but I'm not a heavy eater. I had not started on the thyroid yet:
TSH 44.2 [.2 - 5.5]
Free T4 (Analog) .7 [.8 - 1.8]
After seeing this result, I started going on the meds. So far I don't feel at all different, in fact, I feel worse, more tired. I think it's mostly psycho-somatic; I know that I should be sick, so I feel sick. I felt my first doctor was old fashioned and dismissive of my concerns, so I am switching to a new doctor, but won't see him for another 6 weeks. Until then, my big question is Why did my TSH level jump almost 15 points in a week? Was it caused by fasting, or something else?
This matters a lot to me because overall I feel really fine. I'm in better health than almost everyone I know. So test results are the only way I'll be able to tell, maybe, if I am managing this condition right, so I need to know why the level jumped, and how I can get more consistent results in my tests.
I'd also love to know why I don't feel bad, but from reading this board, that's not that unheard of for people with the really high TSH levels. My T4 is below range, which seems to mean that I am genuinely low on thyroid, but if this is what I feel like when I'm bad, I'm frightened what good will feel like, since I am bipolar, and have to watch out for manic periods. Basically, I'd just like to understand what these levels mean, and how I can decide on what levels to shoot for when I don't have body symptoms to really guide me. I've always listened to my body, and this diagnosis was a shock and a betrayal, and something I don't really know how to handle.