I've been on levothyroxine since June this year after my GP health check found TSH level of 16.1. Started on 25mcg as I'm over 65, increased to 50mcg in August and have my next NHS blood test next week. I've done an advanced thyroid function test with Medichecks (many thanks for the tips on here that helped me successfully get a finger prick sample on my second attempt!), results as follows (tested at 9am after overnight fasting and 24 hours since last levo dose):
TSH 4.4 (range 0.27 - 4.2) - baseline at first test was 16.1
T4 16.3 (12 - 22) - baseline 11.4
T3 3.3 (3.1 - 6.8) - no baseline
Thyroid peroxide antibodies 369 (range 0 - 34) - so clearly autoimmune
Ferritin 27.3 (range 30 - 332)
Folate 8.6 (7 - 35)
Vitamin B12 44.3 (37.5 - 187.5)
Vitamin D 148 (50 - 250) - have been supplementing 1000 IU for several years, which has clearly paid off
So TSH has dropped quite a bit but still well above 2 which I want to aim for as my GP test also identified high cholesterol. I can see that T3 is at the very low end of the range - I have no baseline as the NHS test didn't include it.
The Medichecks report unsurprisingly recommended supplementing iron, and that I should discuss this with my GP, as well as asking for a full blood count. Also that I should consider taking a B12 supplement for 3 months, and to increase my intake of folate-rich foods. And to consider a blood test for serum MMA.
I can see why I frequently feel tired! Thanks to this forum for all the recommendations to get iron and vitamin levels checked, as I wouldn't have thought of doing this otherwise.
I'll be asking my GP to up my levo dose to 75mcg - this would be slightly below the optimum dose for my weight as I'm under 8 st - and will discuss the iron and B12 levels with her and ask about the full blood count (I did have one in June though, with everything pretty well in the mid-range). Any other advice and suggestions would be most welcome, particularly about iron and B12 supplementation.
Thanks in advance.