Further to my post yesterday about BTF and mixed messages, I have sourced the full 2006 document which includes the referencing (it would be useful if someone could follow up on these):
(NB these guidelines are posted on the BTF website: btf-thyroid.org/index.php/t...
So it would appear that there have been no further guidelines since 2006.
I've also come across a website that purports that the originator of the TSH and T3 tests (Dr Utiger) urged doctors not to use the TSH test as the definitive diagnosis of thyroid problems, but to look at body temperature and other symptoms:
It would be useful to be able to obtain the primary sources for his statements as this would provide a much stronger argument.