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T3, Free (Triiodothyronine, Free)

Mnemonic:    [T3 Free]
Name:    T3, Free (Triiodothyronine, Free)
Specimen:    1 mL serum from a Red SST or Red top tube.
Minimum Spec:    0.5 mL
Spec Stability:    Stable 5 days refrigerated.
Reference Range:    2.8 - 5.3 pg/mL
  Method:    Chemiluminescent Immunoassay
Note:    If the provider's order did not specify "Free T3", the order will require clarification by the provider.