Home
HelpTest Code FT3 T3 (Triiodothyronine), Free
Performing Laboratory
| Memorial Hospital Laboratory- Automated Procedures | 304-388-5953 |
| Teays Valley Hospital Laboratory | 304-757-1770 |
Specimen Requirements
Plasma-Mint Green, Dark Green Lithium Heparin or Serum-SST gold top, red top
Allow SST or red top to completely clot
Spin and physically separate plasma/serum from contact with cells as soon as possible
4 mL of plasma/serum (minimum 2 mL)
Specimen Rejection
- Improperly labeled, collected, stored, and transported
- Quantity not sufficient
Storage and Stability
| Room temperature 15-30oC | 8 hrs |
| Refrigerated 2-8oC | 48 hrs |
| Frozen <-20oC | Not specified |
Reference Values
| Age Range | Reference Range (pg/mL) |
| 0 minutes - 18 yrs | 2.8 - 4.4 |
| 18 yrs - 150 yrs | 2.5 - 3.9 |
Methodology
Chemiluminescent immunoenzymatic competitive assay
Days Test Set Up and Turnaround
Monday through Sunday, Continuously
| AM Collection | Expected by 9AM same day |
| Routine | Expected within 24 hrs |
| Stat | Expected within 1 hr |
| Timed | Expected results are test dependant |
CPT Coding
84481