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HelpTest Code FT4 Free Thyroxine
Performing Laboratory
YRMC Laboratory
Day(s) Test Set Up
Monday through Sunday
Specimen Requirements
LT Green/Mint Top (NAHEP)
Minimum Draw Volume: 2mL
Order of Draw
Specimen Transport Temperature
Stability- Refrigerated Up to 24 hours from the time of collection.
Stability- Ambient Up to 8 hours from the time of collection.
If specimens cannot be centrifuged, they must be received in the laboratory within 2 hours.
LOINC Code
3024-7
CPT Code
84439
Unit of Measure
ng/mL