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HelpTest Code LAB135 T3, UPTAKE
Additional Codes
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External:
Beaker: LAB135
PERFORMED AT
SBH LABORATORY
Specimen Requirements
Container Type: Lithium Heparin (Green Top) or Serum Separator (Gold Top)
Specimen Type: Plasma or Serum
Preferred Volume: 1 mL
Emergency Minimum Volume: 0.3 mL
Specimen Processing: Separate serum or plasma from cells as soon as possible by centrifugation. Store and transport refrigerated. One freeze/thaw acceptable.
Limitations: Samples should not be taken from patients receiving therapy with high biotin doses (i.e. >5 mg/day) until at least 8 hours following the last biotin administration.
Alternate Specimens: Plain Serum Tube (Red Top), Sodium Heparin (Dark Green Top)
Stability:
| Temperature | Time |
|---|---|
| Room Temp | Unacceptable |
| Refrigerated | 8 days |
| Frozen (-20 øC) | 3 months |
Method
CLIA
Synonyms
T3-Uptake, T3U, Soft T Uptake, T3 Uptake
CPT Codes
84479
Department
Chemistry
Test Schedule
Daily
Reference Lab
SCHS
Remarks
New test (TBI units) replaces T3 Uptake.