Endocrine Abstracts

Macro TSH is a large molecular-sized thyroid-stimulating hormone (TSH) that is including TSH and anti-TSH antibody. Patients with macro TSH have elevated serum TSH and normal free thyroxine levels similar to subclinical hypothyroidism. A 18-year old female patient was referred from gynecology and obstetrics to endocrinology clinic for evaluating of elevated TSH with normal free thyroxine levels. Laboratory and clinical investigations revealed that only discordant TSH levels (n...