Got the result after being tested because of strange sort of numb sensation in toes and ball of feet. The result was 678 range 180-1000 so te surgery have said this is normal. Looks OK to me. As mentioned in previous post since taking T3, now just starting 3rd week, the sensation is gradually disappearing. Seeing GP next week, not sure what she will say regarding the T3 clearing the symptom. Any comments gratefully received. Have to say T3 is amazing, aches/pains gone, constipation gone, metabolism speeded up and of course the feet issue.