Labels:text | screenshot | black and white | black | font | document OCR: a total 14 The FTI is calculated from the results o ng test. e thyroid estimation and a thyroid hormone bindi Depending upon the method used for th as shown hormone binding test, the calculation is which is in Fig. 15.13. The FTI gives a value for T and is of corrected for alterations in TBG capacity particular value in subjects taking oral in contraceptive therapy, in pregnancy, and een widelyhypoproteinaemic states. The index has e use of used for these reasons, but it involves th d by the two tests and therefore may be supersede direct 'free' thyroid hormone assays, wh effectively measure the same entity. See also: . Thyroid Hormone Transport