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HelpTest Code T4 TOT THYROXINE (T4)
Specimen Type
Mint / Heparin Plasma
Gold / Serum acceptable
Specimen Processing
Spin down mint or gold tube within 1 hour of collection
Specimen Volume
1 ml
0.5 ml minimum
Specimen Stability
Refrigerated-48 hours
Frozen-1 week
Performing Laboratory
Great Plains Health