- FT4MS
Free T4, Equilibrium Dialysis/Mass Spectrometry (RPS)
Test Code
FT4MS
Specimen Name
Free T4, Equilibrium Dialysis/Mass Spectrometry (RPS)
CPT Codes
- 84439
Collect
SST SERUM (1)
Stability
Refrigerate
Volume
2 mL
Minimum Volume
0.3 mL
Performed
Performed Sun, T, Th / Reported 2-6 days
Additional Information
ARUP # 0093244 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