Laboratory Services

Triiodothyronine (T3)

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Updated Test Information:

Test Description
Triiodothyronine (T3)
Synonym(s)
Total T3, T3
Test ID
T3
Performing Lab
Incyte Diagnostics
Specimen Type
Serum
Specimen Requirements
SST
Alternate Specimen Type
Red, Li‑heparin, K2‑EDTA and K3‑EDTA plasma
Minimum Sample Volume
1 mL
Pediatric Min. Volume (if applicable)
500 uL
Stability
8 days at 20‑25 °C,
14 days at 2‑8 °C,
12 months at ‑20 °C (± 5 °C)
Methodology
electrochemiluminescence immunoassay “ECLIA”
Estimated TAT
0-2 days
Testing Schedule
Monday-Saturday
CPT Code(s)
84480
Reference Range
80-200 ng/dL
LOINC Code(s)
3053-6