? for Val about T4 - comments from other members welcome

[Guest guest]

Dear Val,

I had a blood draw yesterday morning and this afternoon I rang the lab to get my

results which are :

TSH 0.03

FT4 2.4 (bottom of range usually 11, so reading very low)

FT3 9.6 (way off the top of the range)

I forgot to ask for the ranges but had a look at the ranges on my last draw from

the same lab to compare and based my comments on them.

I am surprised that I am making T4.  I thought that the T3 I take (87.5 µg/day)

would stop the TSH secretion completely and therefore I would have no T4 in my

blood even though I take iodine.  All the info I have read on the subject says

that T3, particularly in large quantities, should suppress thyroid hormone

secretion.

Do you have any idea what is going on here? 

I would like to hear from anybody else on this list who does iodine too.

MacGilchrist