I will try to be brief and I appreciate you reading this and hopefully responding
I went to see my doctor back in August (4 months ago) because I had various symptoms, extreme tiredness, feeling cold, unable to exercise, palpitations etc but my main concern was that I had lost a lot of body hair including my eyebrows!
The doctor immediately said that I had an underactive thyroid and sent me for a blood test but the result came back normal which she was very surprised about. She said that my Ferritin and B12 were low so started me on supplements.
TSH level 1.65 miu/L [0.35 - 5.5]
free T4 level 13.5 pmol/L [10 - 19.8]
ferritin level 16.4 ng/ml [10 - 291]
vitamin B12 level 225 ng/L [211 - 911]
4 months later I had a follow up test and these are the results for camparison:
TSH level 1.66 mU/L [0.35 - 5.5]
free T4 level 10.3 pmol/L [10.0 - 19.8]
ferritin level 41.2 ug/L [10.0 - 291.0]
vitamin B12 level 294.0 ng/L [211.0 - 911.0]
I was pleased to see that my ferritin has come up considerably and will carry on supplementing.
The concern I have is that the T4 has dropped. The doctor said that all results are fine and within the normal range! I pointed out that T4 is only .3 within the lower end but he shrugged and said everything is normal.
All I want is to grow my eyebrows back, I've seen 4 doctors and they just shrug and say it's just one of those things that they can't explain.
I don't fully understand thyroid blood tests but I do know that there has to be a certain combination of results. Can anyone tell me if my T4 is ok