I have understood staging Levothyroxine before blood tests and stopping all biotin intake the week before, and early morning blood test.
I am new to T3, does this need to be moderated before a blood test?
Thank you.
I have understood staging Levothyroxine before blood tests and stopping all biotin intake the week before, and early morning blood test.
I am new to T3, does this need to be moderated before a blood test?
Thank you.
Mothebear
We always suggest that the day before the test you split T3 into 2 or 3 doses (whichever is possible) and take the last part of the dose 8-12 hours before test, ie if you test at 9am then take last part of dose between 9pm the night before and 1am. Any longer would give a false low FT3 result, too close to test gives a false high FT3 result.
thank you Seaside Susie
As I take one dose at 7 am and a 2nd one at 1pm, I’ll take the 7am one at about 10pm and nothing til after my blood test.
I take T3 alone but on the morning of having a blood test (I get the earliest blood draw) I don't take T3 until after blood draw.
I have had no queries from GP about my results. I also feel well and have no symptoms.