I have been Hypothyroid from may 2013,currently on 100mcg of Levo and i have a blood test on Tuesday morning.Can someone please tell me the best way this test can be done,should i take my Levo as normal in the morning and have my breakfast or should i totally fast with no Levo and have it when i get home? i have not been told to fast but will this give a better and truer reading?