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HelpTest Code LAB137 T3, FREE
Specimen Information
| Container | Specimen | Temperature | Collect Vol | Submit Vol | Min Vol | Stability |
| SST | Serum | Refrigerate | 4 mL | 0.5 mL | 0.2 mL | 7 days |
| Lithium Heparin (green top) | Plasma | Refrigerate | 4 mL | 0.5 mL | 0.2 mL | 7 days |
*While a green microtainer is an optional tube type in rare circumstances, it is not recommended.
Test Schedule / Analytical Time / Test Priority
Daily / Same day / Available STAT
Reference Range
| Age | Sex | Low | High | Units |
| 0 - 2 weeks | All | 3.0 | 12.4 | pg/mL |
| 2 weeks - 2 years | All | 3.5 | 7.4 | pg/mL |
| 2 years - 4 years | All | 3.5 | 7.4 | pg/mL |
| 4 years - 13 years | All | 4.3 | 7.0 | pg/mL |
| 13 years - 18 years | Female | 3.7 | 6.1 | pg/mL |
| 13 years - 18 years | Male | 4.1 | 6.7 | pg/mL |
| ≥18 Years | All | 2.8 | 5.3 | pg/mL |
CPT(s)
| Description | CPT Code |
| T3, Free | 84481 |
Method
Chemiluminescence Immunoassay
Instrumentation
Ortho Vitros 5600
Result Component(s)
| Reporting Name | Epic Code | Atlas Code | Mayo Access ID | LOINC |
| T3, Free | FREET3 | 3051-0 |
Performing Location
University of Vermont Medical Center
Section
Chemistry-1
Is the UVMMC lab NY State Certified to perform this testing? Yes/No
Yes