I've just left my GP( a different one to my first who diagnosed me with an under active thyroid and gave me 2 months supply of Levo 50 then gave me a form to get my blood rechecked in 3 months!) and I asked this second Dr if she could test my antibodies to see if I had an autoimmune disease.
Her reply was that I was tested-in February along with the other tests- didn't I know the results? No I didn't- I was given a printout at the surgery - but apparently the result fell off the page- so neither I nor the first GP saw them.
Thyroid peroxidase antibo -
greater than 1300iu/ml. (Less than 60)
She said that means I have Hashimoto's thyroiditis .
My result looks very high and I'm not sure what that means.