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HelpTest Code T4FREE T4 (Thyroxine), Free
Additional Codes
| Hospital Ordering Code |
|---|
| LAB127 T4, FREE |
Specimen Requirements
Submit only 1 of the following specimens:
Specimen Type: Plasma
Container/Tube: Green top (lithium heparin)
Specimen Volume: 0.5 mL
Additional Information: Label specimen appropriately (plasma).
Specimen Type: Serum
Container/Tube: Serum gel
Specimen Volume: 0.5 mL
Additional Information: Label specimen appropriately (serum).
Performing Laboratory
Unity Point-Sioux City-Chemistry
CPT
84439
Methodology
Electrochemiluminescence
Specimen Transport Temperature
Ambient Stability:
5 days
Refrigerated Stability:
7 days
Frozen Stability:
30 days ***Freeze only once***
Performance
Daily