Hi I'm new to this site.
I have had under active thyroid since 2001 when it was first confirmed as borderline
i was advised to have thyroid function test again in 6/12 months, but when i moved away it took years to persuade a GP to carry out a thyroid function test
when i eventually succeeded i achieving this in 2006 i was prescribed 25mg thyroxine and basically forgotten about for another 2 years, after which the dose was increased to 50mg and later still to 75mg and over the last 3 years to 100mg
while waiting to get to the 100mg per day, my weight increased, i developed high blood pressure and high cholesterol levels, so, because my borderline under active thyroid was neglected for up on 12 years i was left to develop a string of hypothyroid induced other health conditions, i have not felt healthy since a bad infection in 2001
and i was a very health conscience person and fit.
Recently i had my thyroid function levels tested by a private health screening company who came up with the results which read my T4 levels were raised to 24.1
when for last few years NHS test was 8.80.-21.00pm0l/L
I now don't know who to believe, does anyone know what marker does the NHS use to determine the correct levels for under active thyroid? i would be grateful for some advice, thank you