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HelpTest Code TSHFT4 Thyroid Stimulating Hormone with reflex to Free T4
Specimen Type
Plasma
Container
Green Lithium Heparin
Minimum Volume
1 mL
Pediatric minimum: 1 green microtainer
Stability
8 hours at 20-25°C/2 days at 2-8°C
Expected Turn Around Time
STAT/ASAP: 1 hour
Transfer Instructions
Centrifuge. Transport separated specimen at 2-8°C.
CPT
84443|84439
Result Information
| Result Code | Result Name |
| TSH | TSH |
Reflex Info
If the TSH value is <0.55 uIU/mL or >4.78 uIU/mL, a Free T4 (T4F) test will be run on the sample.