fT3 (Free Triiodothyronine)
LABOKLIN Service ID: 1126
| Material | serum 0.5 ml |
| Method | CLIA |
| Duration | 1 day |
| Remark | T3 in the serum is 99.7% reversibly bound to transport proteins. fT3 levels correlate with T3 secretion and metabolic activity. Measuring free T3 is indicated when changes in the concentration of transport proteins for T3 result in changes in total T3 concentration. |