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Test Code T4FREE T4 Free

Specimen Requirements

Container/Tube: RED/SST
Preferred: Serum
Acceptable: Serum Only
Specimen Volume: 1.0 mL

TRANSPORT TEMPERATURE

Processed samples may be refrigerated at 2–8 °C for 14 days if not tested within 24 hours. For longer storage, serum samples may be frozen at -20 °C for three months.

PERFORMING LAB

WKMC, WKB, WKP, WKS