- FT4MS
Free T4, Equilibrium Dialysis/Mass Spectrometry
Test Code
FT4MS
Specimen Name
Free T4, Equilibrium Dialysis/Mass Spectrometry
CPT Codes
- 84439
Collect
SST-Serum
Stability
Refrigerated 14 days
Volume
2 mLs
Minimum Volume
0.5 mL
Performed
Performed Sunday through Saturday - Reported 2-5 days
Components
—
Additional Information
Some medications may induce transient changes in FT4 concentrations. This test is not recommended for patients currently on heparin treatment as FT4 concentrations may be falsely elevated.
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Common Lab Definitions
- Serum
- Plasma
- STT