T3 (Triiodothyronine), Total (Roche)
General Information
Lab Name
T3 (Triiodothyronine), Total (Roche)
Lab Code
T3RD
Synonyms
T3, T3-Total, thyroid function
Interpretation
Method
Electrochemiluminescence immunoassay (ECLIA)
Reference Range
Units: ng/dL| Female | Male | Unknown | |||
|---|---|---|---|---|---|
| Age | Range | Age | Range | Age | Range |
| 0- | 80-200 | 0- | 80-200 | ||
Effective date: 09/13/2026
Ordering & Collection
Specimen Type
Collection
ALL LOCATIONS:
- Preferred specimen: 4 mL blood in GOLD SST tube.
- Acceptable specimen: 4 mL Blood in ORANCE RST, LIME GREEN PST, RED TOP tube, GREEN TOP, or PEARL or LAVENDER TOP EDTA (Roche only) tube.
- Pediatric: 1 FULL LIME GREEN MICROTAINER tube. 1 Full GOLD MICROTAINER -acceptable.
Quantity
requested: 1.0 mL
minimum: 0.5 mL
Processing
Refrigerate serum/plasma.
Storage stability:
- Room temperature: Up to 8 days
- Refrigerated (2–8°C): Up to 14 days
- Frozen (-20°C): Up to 12 months
- Thawing: Freeze/thaw the sample only once
Performance
LIS Dept Code
Chemistry, Automated Panels (CHA)
Performing Location(s)
| CL |
Renton Core Lab
206-520-4600 Clinical Lab, Room 170 |
|---|
Frequency
Monday through Sunday
Available STAT?
No