24hr Urine test - T3 query

[Guest guest]

Hi

I wonder if anyone can clear this up for me?

I was reading the little leaflet that comes with the Cytomel and

saw.......

" Since T3 is not firmly bound to serum protein, it is readily available

to body tissues. "

Does this add to the case for 24hr urine testing for T3 - and for

conversion problems - as opposed to blood tests if T3 is not firmly

bound to serum protein?

I am not sure I understand.

B