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Name of Test
Thyroxine (T4) Free, Dialysis/Mass Spectrometry RefLab
Alternate Names
501902 LC
SoftLab Order Code
FT4DM
Epic Order Name
Thyroxine (T4) Free, Dialysis/Mass Spectrometry RefLab
Epic Order ID
LAB3709
Laboratory
RefLab
Sample Type
Serum or Plasma
Collection Container
SST (Gold Top Serum Separator Tube) or Lavender (EDTA)
Collecting Volume
2.0 ml
Minimum Collecting Volume
1.0 ml, pediatric volume is 0.8 ml (will not permit repeat testing)
Storage or Stability
Frozen
Instructions
Serum or plasma must be separated from cells within 45 minutes of venipuncture and frozen
 
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