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Important Links

Testing Algorithms

Specimen Collection

Critical Values/Reference Ranges

Clinical Pathology

Anatomical Pathology

Mayo Clinic Laboratories

Catalog ID Free T3 Free T3

CPOE Test Name

Free T3, Serum

Synonyms

Free Triiodothyronine, FT3

Specimen Type

Serum

Specimen Requirements

5 mL gold top SST tube; 2 mL blood minimum

Reference Values

2.3 – 4.2 pg/mL

CPT / HCPCS Code

84481

Performing Lab

Core Laboratory AD 3301 721-2120