Thanks to all those who kindly responded to my low TSH concerns. I have a further concern.
My daughter's grandmothers both suffered from thyroid problems as do I. She is now 42 and is showing symptoms of hypothyroidism in that she is exhausted most evenings and goes to bed as early as possible and has bouts of mild arthritis in her fingers and toes which flares up then subsides which has been diagnosed as early stage rheumatoid arthritis. She has just had a thyroid blood test with the following results which her GP has interpreted as being normal. She has now embarked on the Barnes temperature programme.
Blood test results:-
Serum free T3 4.4pmol/L (3.5-6.5)----normal
Serum free T4 10pmol/L (9-23)-----normal
Serum TSH level 4.8 mu/L (0.55-4.8)--normal
Serum B12 503 ng/L (211-911)---normal
Se thyroid peroxidase Ab conc (LMB3917)>1300ku/L---abnormal--thyroid antibodies screen is positive
Serum folate 19.3ug/L (>3.4 )---normal
Rheumatoid factor 128.51 iu/L (0-18.5)-- strong positive
My daughter and I would welcome your comments.