In the article, “Serum levels of fetuin-A are negatively associated with log transformation levels of thyroid-stimulating hormone in patients with hyperthyroidism or euthyroidism: An observational study at a medical center in Taiwan”,[1] which appears in Volume 97, Issue 46 of Medicine, the unit of serum fetuin-A levels should be μg/mL, instead of ng/mL. Here, AHSG is linked to hyperthyroidism.