TEST ID T3F T3 FREE (TRIIODOTHYRONINE FREE)
Additional Codes
FT3
Performing Laboratory
NRLS-Core Chemistry
Specimen Type
Plasma/Serum
Specimen Required
Container/Tube:
Preferred: Lithium Heparin (Mint)
Acceptable: Serum gel, Tiger top, Red top
Specimen Volume: 1.0 mL
Collection Instructions:
Plasma gel tubes should be centrifuged within 2 hours of collection. 4 hours is acceptable.
Serum gel tubes should be fully clotted and centrifuged within 2 hours of collection. 4 hours is acceptable.
Red-top tubes should be fully clotted, centrifuged and aliquoted within 2 hours of collection.4 hours is acceptable.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
Specimen Type | Temperature | Time |
Plasma/Serum | Refrigerated(preferred) | 48 hours |
Ambient | 8 hours | |
Frozen | Indefinite |
Reference Values
An interpretive report will be provided