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HelpTest Code Epic LAB127 T4, FREE
Sunquest ordering code
T4FREE
Sample type
LIGHT GREEN LITHIUM HEPARIN PLASMA
ALSO ACCEPTABLE: SST OR RED TOP SERUM
CPT Code
84439
Alias name
FREE T4, FREE THYROXINE, FT4, THYROXINE FREE
Performing Laboratory
QCR
Minimum Volume
0.1 mL
Specimen Stability
ROOM TEMPERATURE: 5 DAYS
REFRIGERATED: 7 DAYS
FROZEN: 30 DAYS