The aim is 50mcg starting dose and every six weeks a blood test with increases of 25mcg each time until TSH is 1 or lower. The aim is a Free T4 and Free T3 should be in the upper part of the ranges - both are rarely tested.
Change your doctor or become your own.
The reason - she is treating a blood test not the patient. She has prolonged your ill-health.
"Serum TSH level 6.5mu/L (0.27-4.2)" - far too high."
Serum Free T4 level 21.2pmol/L (12.0-22.0)-looks as if you're not converting.
"Serum free triiodothyronine level 3.3pmol/L (3.1-6.8) - too low - should be nearer 6".
"Serum vitamin B12 level 335ug/L (180.0-914.0)" - too low should be nearer 900.
I shall add in SeasideSusie who will advise about raising your vitamins/minerals.
You have hashimoto's an Autoimmune Thyroid Disease due to having raised antibodies. It is these that attack the thyroid gland and wax and wane until you're hypothyroid but treatment is the same. Going gluten-free can help reduce the antibodies.
Do you always have your blood tests at the very earliest, fasting (you can drink water) and allow a gap of 24 hours between last dose of levo and test and take afterwards. This method keeps the TSH at its highest as it drops throughout the day.
If you didn't fast etc, your results will be skewed as you've taken a dose before test. I think the majority of people who have hypo are unaware that 'timing' can affect results and maybe to our detriment.
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