Hi all. I am due for some blood tests soon. I was wondering how best to go about getting them. I am on 2 grains erfa. I take one in the morning and one mid to late afternoon. (Still trying to work out optimal times to take). At what time should I get the blood drawn and should I take my meds as normal or not?
Thanks
Written by
Lei9g
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General advice here is to have the earliest appointment of the day for blood draw after an overnight fast (just delay breakfast and drink water only before blood draw), and when taking NDT (or T3) then take your last dose 8-12 hours before. Any longer gap and you'll get a false low FT3, take your NDT too close to the blood draw and you'll get a false high FT3.
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