Home
HelpTest Code LAB137 Triiodothyronine (T3), Free
Additional Codes
T3 F
Collection:
Specimen: Blood
Preferred: Lt Green w/ Gel - Li Hep
Acceptable: SST or Red Top
Specimen Volume: 5 mL; Minimum 1.0 mL
Pediatric Collection:
One Lt Green w/ Gel - Li Hep, SST, or Red Top microtainer filled to 600 uL.
Stability:
If testing is delayed more than 24 hours, remove serum/plasma from the cells or gel separator. Once serum/plasma is separated from cells:
Ambient: 8 Hours
Refrigerated (preferred): 1 Week
Frozen: 2 Weeks
Turnaround Time (TAT):
STAT: 2 HOURS
Routine: 4 HOURS
Test Availability:
Daily / 24 Hours / Available STAT
Performing Laboratory Section:
Chemistry / UMC MAIN LABORATORY
Reference Interval:
| Age | Female | Male |
|---|---|---|
| < 4 days | No reference range established | No reference range established |
| 4 days - < 1 year | 2.3 - 4.9 pg/mL | 2.3 - 4.9 pg/mL |
| 1 year - < 12 years | 2.8 - 4.4 pg/mL | 2.8 - 4.4 pg/mL |
| 12 years - < 15 years | 2.5 - 4.0 pg/mL | 2.9 - 4.3 pg/mL |
| 15 years - < 19 years | 2.3 - 3.7 pg/mL | 2.3 - 3.9 pg/mL |
| > 19 years | 1.7 - 3.7 pg/mL | 1.7 - 3.7 pg/mL |