This week I'll be doing my next Medichecks blood test for TSH, T4 and T3. I do the blood tests at around 8am. I take 100mcg levothyroxine at bedtime and I know I need to miss the dose the night before testing.
I also take 5mg T3 in the morning. Last time I did my bloods, I took the T3 the morning before as usual and then did the blood test the next day at 8am before taking that day's dose of T3. But from what I've learnt on this forum, it seems the the ideal is to take the previous T3 dose 12 hours before the test, not 24 hours before, to get a sense of the average T3 level in the blood. So should I take my T3 in the evening the day before rather than in the morning, even though that's different to my usual routine?
Grateful for any advice from those more experienced than me! Thanks.