Which Thyroid Test? Total Or Free T3/t4?

[ddjd]

I'm going to have to pay for my blood tests so what's the minimal I need to establish thyroid function?

And why are half of people saying get free T3/T4 whilst the other half say to get Total T3/T4 tested?

 

[BingDing]

Joeyd, section III of this article might be informative:

Thyroid: Therapies, Confusion, And Fraud