Test Code FT3 Triiodothyronine, Free (Free T3)
Additional Codes
| PathLab | FT3 |
| Epic ID | LAB137 |
Specimen Requirements
Preferred Collection Container:
Light Green (Lithium Heparin Plasma Separator Tube)
SST (Serum Separator)
Also Acceptable Collection Container:
Green No Gel (Lithium Heparin)
Red (No Additive)
Collection Information:
Collect blood in a Light Green (Lithium Heparin Plasma Separator Tube) or SST (Serum Separator). Green No Gel (Lithium Heparin), Red (No Additive) also acceptable.
Transport Information:
Centrifuge and aliquot 1.0 mL of serum or plasma into a plastic transport vial. Send refrigerated.
Minimum Sample Volume:
0.5 mL of serum or plasma
Stability/Transport
| Temperature | Stability | Preferred Transport |
| Refrigerated | 7 days | X |
| Frozen | 1 month | |
| Room Temp | 4 hours |
Performing Lab
Pathology Laboratory
Methodology
Electrochemiluminescence
Day(s) Performed
Daily
Report Available
2-24 hours
CPT Code Information
84481