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HelpTest Code FT3 T3 (Triiodothyronine), Free, Plasma or Serum
Performing Laboratory
Lima Memorial Health System Laboratory
Specimen Requirements
Preferred:
Container/Tube: Green cap-yellow ring Top (Lithium Heparin Gel) tube
Minimum Volume: 1.0 mL
Collection Instructions: Centrifuge within 2 hours.
Also Acceptable:
Container/Tube: Plain, Red Top or Serum gel (SST-Gel) tube
Reference Values
2.80-4.40 pg/ml
Specimen Stability
Ambient: 8 hours
Refrigerate: 48 hours
Frozen: aliquot for longer storage
Day(s) Test Set Up
Monday through Sunday
Methodology
Chemiluminescent Immunoassay
Test Classification and CPT Coding
84481
Mnemonics
T3FREE, FT3