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HelpTest ID BLOD0596 FREE T4
AKA
FT4
Specimen Type/Requirements
Green-Top (Lithium heparin) Tube – preferred
Gold-Top (SST Serum)
Specimen Volume
| Preferred Volume | 1.0 mL plasma or serum |
| Minimum Volume | 0.5 mL plasma or serum |
Stability/Transport
| Room Temperature | 24 hours | |
| Refrigerated | 6 days | Preferred for transport |
| Frozen | 6 days |
Performed Test Frequency
Monday-Sunday
Methodology
Chemiluminescence – Competetive
Performing Lab
Sanford Laboratories-Bemidji
CPT
84439