My past three blood tests have shown T3 conversion problems but my endo is requesting a genetic blood test to fully confirm this. It doesn't look like this will be covered by health insurance. Is this genetic test usually needed before a doctor will treat T3 problems?
TSH is 0.15miu/L, (2 months ago it was 0.40 so it is dropping) fT4 20.9pmol/L, fT3 was low normal at 3.2pmol/L (3.1-6.8) (2 months ago it was 3.5 so it seems to be dropping).
Symptoms include feeling tired, cold, dry skin, lack of concentration although a previous forum post here did confirm my iron is a little low which I am rectifying and a gluten intolerance was also identified. All other tests fine and optimal.