Hi there, you lovely people. Once again been given a blood test form by my GP which is just testing for TSH, even though she knows i'm on 10mg of T3 and i'm low in Vit D and take supplements. So before i go to her i think i'm going to get my own bloods done at Blue Horizon, but i'm not sure which 'batch' to go for, so any advice gratefully received. I'm also contemplating taking the Gene test. Has anyone out there done the same and is it a definitive test to confirm whether you should be on T4 or T3?