I understand that I'm to leave 12hrs between my last dose of t3 and my blood draw, but I take my levo at the same time (in the morning). If I take only t3 in the morning and wait 12hrs it will be longer than 24hrs since my last dose of levo. Does that make sense? I'm going in circles trying to figure out how to space it out.
If it helps I take both meds around 7:30 every morning, and it is likely I will have the blood draw in the late afternoon/evening. (I won't have a lot of control over the timing but these are private tests so I can make allowances if the tsh is lower than it might have been if I'd been able to do the blood draw in the morning.)