Labels:text | screenshot | black and white | black | document OCR: rectly are Assays that measure free 14 or free T3 d sment of now available and are useful in the asse -step assaysthe thyroid status of a patient. The singl ed probably function effectively as a combir 1 (as does measure of T4 and free hormone fraction ty. Free the FTI), and have the virtue of simplici fected by thyroid hormone levels should not be a mone the concentration of normal thyroid ho id binding proteins. Indirect methods of estimating free thyr ests hormone levels are widely used. These n T4 or T3 combine the determination of total seru erive a free with an estimate of the free fraction to d ethods hormone index. Basically, the indirect n roteins 'correct' for the effect of altered binding over three (primarily TBG), and have provided, for reliable decades, a highly, although not ...