Endocrine Abstracts

A 42 year old female presented with classical symptoms of hypothyroidism. Thyroid function tests confirmed hypothyroidism: TSH >100 mu/L and free T4 7 pmol/L. Thyroid peroxidase antibodies were significantly elevated at >3340 iu/ml. She was started on thyroxine 150 mcg but 3 months later the TSH remained elevated at 45 mu/L. Further review indicated no significant symptomatic improvement and TSH remained high at 61 mu/L. Her thyroxine dose was increased to 200 mcg but ...