Above are the 2 results of when I had my T4 dose at night 11pm and tested in the morning. And also a week later, when I did a blood at 11pm which was 24 hours after a dose the night before.
So following the discussion here, I did another experiment and tested as recommended by SlowDragon.
If you normally take levothyroxine at bedtime/in night ...adjust timings as follows prior to blood test
If testing Monday morning, delay Saturday evening dose levothyroxine until Sunday morning. Delay Sunday evening dose levothyroxine until after blood test on Monday morning. Take Monday evening dose levothyroxine as per normal
So I stopped taking Vitamin B complex 7 days before. Then adjusted my dosage to morning 8am and then done a test 24 hours later. Here are my results.
TSH - 1.14 (normal range 0.27 - 4.2 mU/L)
T4 - 21.0 (normal range 12 - 22 pmol/L)
T3 - 3.5 (normal range 3.1 - 6.8 pmol/L)
It was near enough identical to me taking blood test at 11pm before medication. So a 24 hour gap from the night before.
Any thoughts?
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First time. Took Levo 125mcg at 11pm Sunday night and tested next day. 9.5 hours gap. Monday morning at 8:30am after waking.
TSH - 1.6 (normal range 0.27 - 4.2 mU/L)
T4 - 24.1 (normal range 12 - 22 pmol/L)
T3 - 3.5 (normal range 3.1 - 6.8 pmol/L)
A week later. Took blood test at 11pm before medication. So a 24 hour gap and about 5 hours after last meal.
TSH 0.87 (normal range 0.27 - 4.2 mU/L)
T4 - 20.7 (normal range 12 - 22 pmol/L)
T3 - 3.6 (normal range 3.1 - 6.8 pmol/L)
So I stopped taking Vitamin B complex 7 days before. Then adjusted my dosage to morning 8am and then done a test 24 hours later. Here are my results.
TSH - 1.14 (normal range 0.27 - 4.2 mU/L)
T4 - 21.0 (normal range 12 - 22 pmol/L)
T3 - 3.5 (normal range 3.1 - 6.8 pmol/L)
TSH lower when tested at night
Ft4 over range when tested at 9-10 hour gap between last dose levothyroxine and test
So they all show poor conversion, despite good vitamin levels
Time to look at getting T3 prescribed alongside (very slightly reduced dose) levothyroxine
Here’s link for how to request Thyroid U.K.list of private Doctors emailed to you, but within the email a link to download list of recommended thyroid specialist endocrinologists who will prescribe T3
Ideally choose an endocrinologist to see privately initially and who also does NHS consultations
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