%0 Journal Article %T Differentiating Graves' disease from subacute thyroiditis using ratio of serum free triiodothyronine to free thyroxine %A Adikan Bhasipol %A Chutintorn Sriphrapradang %J Archive of "Annals of Medicine and Surgery". %D 2016 %R 10.1016/j.amsu.2016.07.024 %X The measurement of free thyroid hormone, instead of the total form, is more commonly used in current practice. We aimed to evaluate the usefulness of the ratio of serum free triiodothyronine (FT3, pg/mL) to free thyroxine (FT4, ng/dL) for differentiating Graves' disease from subacute thyroiditis %K Thyroid function tests %K Thyrotoxicosis %K Graves' disease %K Subacute thyroiditis %K Sensitivity and specificity Ab %K antibody %K FT3 %K free triiodothyronine %K TT3 %K total triiodothyronine %K FT4 %K free thyroxine %K TT4 %K total thyroxine %K TFTs %K thyroid function tests %K Tg %K thyroglobulin %K TPO %K thyroid peroxidase %K TRAb %K thyrotropin receptor antibody %K TSH %K thyroid-stimulating hormone %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4990637/