After feeling "not quite right" for over a year (and probably not 100% for about 20 years) someone pointed me in the direction of researching hypothyroidism, which pretty much gave me a checklist of my symptoms. My GP agreed to do a TSH (but not T3/T4 on the grounds of cost) so I went ahead and had a private test, results as follows:
Free T4 13.46 12 - 22 pmol/L
Free T3 3.85 3.1 - 6.8 pmol/L
TSH 2.48 0.27 - 4.20 IU/L
T4 Total 86.1 64.5 - 142.0 nmol/L
Anti-Thyroidperoxidase abs 20.9 <34 kIU/L
Anti-Thyroglobulin Abs H 420.6 <115 kU/L
Vitamin B12 376 142 - 725 pmol/L
CRP 1.70 <3.0 mg/L
Ferritin 71.1 20 - 150 ug/L
Serum Folate 15.23 10.4 - 42.4 nmol/L
So - my assumption is Hashimoto's as the antibodies are somewhat elevated and the T3/T4 are at the low end of "normal". From everything I've read, I believe I may have some hard times ahead at my GP appointment next week to discuss the results of the tests so I want to make sure I'm armed and ready and I'm having a bit of a hard time trying to figure out whether the other tests are OK as they're all in the "normal" range. Any advice gratefully received.