Under dose effects by 25mcg per 2 days

After given a dose of 75mcg alternating with 50mcg/ 2 days my blood test showed normal of thyroxine after 3 months duration of evaluation.

However, another doctor changed the dose to simply 50mcg/ day without checking the blood test. When should be a blood test done to show the effect of reduction of the dose? Can it be done satisfactory after 3 weeks, 4 weeks or better after 3 months.

My next doctor's appointment is after 3 months.

I had TAVI procedure 3 years ago and I am taking co-approval. I am worried of taking less dose of thyroxine by 25mcg in 2 days.

would the effects be serious, and what is the best time to get blood test to evaluate the change of the dose?

3 Replies

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  • Hi nawalsound if you have change of dose then you should have bloodtest to check levels 6weeks later, did your gp just drop your dose without you having a bloodtest to check levels of T4 /t3 or Tsh levels? If so that's doesn't seem right to me. Have you got latest bloodtest results for us to see, if not ask at surgery for them , it's your right to have them under law . Then post them on here so the knowledgeable people on here can advise you. I personally wouldn't change my dose without an explanation from the gp as to why they think you need to.

  • Thank you for your help. I thought the Specialist did it wrong without new blood test before she reduced the dose. So I will get the blood test again after the right time for showing effect with another hospital and another specialist to obtain second opinion. It is difficult to get results from the government hospital so I cannot read them myself or post them here. I will do that with the new results.

  • Make sure you get your test done early in the morning - before 9 am - and fast over-night. Leave a 24 hour gap between your last dose of levo, and the blood draw. :)

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