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HelpTest Code T3 T3 (Triiodothyronine), Total, Serum
Additional Codes
LAB2168
Collection Method
Venous collection
Minimum Volume
0.5ml
Container
Gold Top SST
Acceptable Specimens
Serum:
- Gold Top SST
- Red Top
Plasma:
- Light Geen Top (lithium heparin)
Reference or Target Ranges
| Age | Male | Female |
| <5 days | 0.7 - 2.9 | 0.7 - 2.9 |
| 5 days to 1 year | 0.8 - 2.8 | 0.8 - 2.8 |
| 1 - 10 years | 0.9 - 2.4 | 0.9 - 2.4 |
| 11 - 17 years | 0.9 - 2.1 | 0.9 - 2.1 |
| > 18 years | 0.8 - 2.0 | 0.8 - 2.0 |
Reportable Units
ng/ml
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | 2000 mg/dL |
| Icterus Threshold | 35 mg/dL |
| Lipemia Threshold | 1800 mg/dL |
| Other | QNS, contaminated, improperly Labeled, improper specimen type |
Specimen Stability
| Ambient | 8 days |
| Refrigerated (4°C to 8°C) | 14 days |
| Frozen(-40°C to 0°C) | 1 year |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time | Routine: 4 hours |
| Stat Availability | No |
| Performing Bench | CPH Chemistry |
| Methodology/Method Description | Roche Cobas |
CPT Codes
84480
Last review/edit date
March 2024