Dear all,
Please can I seek your advice on Levothyroxine dosage? I realise now that I haven’t really helped myself with the approach that I have taken to my medication dosage changes, but I’m new to this and am learning!
Following diagnosis of Hashimoto’s hypothyroidism, I was advised by my GP to take 75mg (the usual starting dose of 1.6mg per kg would have been 83mg, so this was reasonably conservative). However, I admit I was somewhat anxious to take this dose, so started on 50mg. After four weeks, my symptoms persisted and I felt rubbish, so I thought my GP was probably right and increased to 75mg as suggested. In hindsight, I now know this was somewhat foolish. After 2 weeks on 75mg (and 6 weeks in total on the 50mg) I had another blood test, the results of which have come back today to show I am now hyperthyroid!
Results below - I did a private blood test the same day as the NHS one, as I wanted to see T3 results. Both were taken prior to my morning tablet, on an empty stomach. The NHS one at 8.30am (venous draw) and the Monitor My Health one at 9.30am (finger prick). I did at least get one protocol right!
I am not sure now whether I should reduce to 50mg or 25mg? I’d be really grateful for advice. Thank you.
TSH:
18/12/2023 10.6 miu/L (0.27-4.20 Blue Horizon)
02/04/2024 20.6 miu/L (0.27-4.20 Blue Horizon)
28/05/24 0.1 miu/L (0.27-4.20 Monitor my Health)
28/05/24 0.1 miu/L (0.27-4.20 NHS)
FT4:
18/12/2023 12 pmol/L (12-22 Blue Horizon)
02/04/2024 11.9 pmol/L (12-22 Blue Horizon)
28/05/2024 29.1 pmol/L (12-22 Monitor my Health)
28/05/2024 26.7 pmol/L (12-22 NHS)
FT3:
18/12/2023 3.1 pmol/L (3.1-6.8 Blue Horizon)
02/04/2024 4.1 pmol/L (3.1-6.8 Blue Horizon)
28/05/2024 5.1 pmol/L (3.1-6.8 Monitor my Health)
Tg:
18/12/2023 263 iu/Ml (<115 Blue Horizon)
02/04/2024 235 iu/Ml (<115 Blue Horizon)
28/05/2024 Not taken
TPO:
18/12/2023 166 iu/mL (<34 Blue Horizon)
02/04/2024 147 iu/mL (<34 Blue Horizon)
28/05/2024 134 iu/Ml (<34 Monitor My Health)