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Hi, I wonder if anyone can give me any advice please. I usually take my 100mg levothyroxine tablet at 7am. I'm due a blood test and usually this is taken in the morning. Does when I take my tablet effect the test? If I have a blood test at 8am will I be full of the levothyroxine and so creat a false reading? Should I take the tablet or delay it until after the test?
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