Laboratory Services
TSH with Reflex to FT4
Print this pageUpdated Test Information:
| Test Description |
TSH with Reflex to FT4
|
|
|---|---|---|
| Synonym(s) |
TSH w/ reflex |
|
| Test ID |
TSHR
|
|
| General Information |
Will reflex to FT4 with abnormal TSH result |
|
| Specimen Type |
Serum |
|
| Alternate Specimen Type |
Red, Li‑heparin, K2‑EDTA and K3‑EDTA plasma |
|
| Specimen Requirements |
SST |
|
| Minimum Sample Volume |
1 mL |
|
| Pediatric Min. Volume (if applicable) |
500 uL |
|
| Stability |
5 days at 20‑25 °C, |
|
| Methodology |
electrochemiluminescence immunoassay “ECLIA” |
|
| Estimated TAT |
0-2 days |
|
| Testing Schedule |
Monday-Saturday |
|
| CPT Code(s) |
84443 |
|
| Reference Range |
TSH: 0.270-4.200 uIU/mL |
|
| Performing Lab |
Incyte Diagnostics |
|
| LOINC Code(s) |
11580-8 |
