I have an appointment with my Endo in the next few weeks and normally have the blood test straight afterwards. The earliest appointment I can get is 11.15 so the blood test will be about midday. I know not to take Levothyroxine that morning until after the blood test and also to fast from the night before until after the blood test. I am just concerned that the reading will be distorted as it's later in the day and I know TSH is highest in the morning. I could suggest I go back earlier the next day for the blood test if it makes a difference. I would welcome any advice please.