Been feeling progressively worse for the last few years: extreme tiredness, lack of concentration, brain fog, getting words muddled, memory problems, feeling cold, headaches, joint stiffness and probably other things I've forgotten. I've had blood tests before but aside from iron tablets I've always just been told everything was normal. This time I'm at a new GP practice (my old one closed) so I decided to ask for a copy of my results. I was told they were normal but thought I'd post them for advice. I know it's probably not much to go on but any advice/guidance on the results and what, if anything, I should do next, would be appreciated. Thank you.
TSH 4.67 [0.35 - 5.50]
B12 364 [246 - 911]
Folate 6.6 [3.40 - 20]
Ferritin 30.4 [20 - 300] --- been on ferrous fumarate 2 x daily for 6 weeks as it had been down at 15.
Vit D 52 [30 - 200]