I'm due to have a private blood test this Thursday and would be grateful for advice as to when and how I should take my T3. Last year I took both my Levo (75mcg) and T3 (10mcg) 24 hours before the test. I have since learned that T3 should be taken 12 hours beforehand. That being the case, should I take the full 10mcg at 9pm the night before or split the dose and take 5mcg with the Levo on Wednesday morning and 5mcg at night? I'm just a bit concerned that the full dose will give me insomnia.....it may not, but so many things do. Thanks.