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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

Epic EAP Test Code

LAB137

Synonyms

Free Triiodothyronine, FT3

Specimen Type

Serum

Specimen Requirements

5 mL gold top SST tube; 2 mL blood minimum

CPT / HCPCS Code

84481

Performing Lab

Core Laboratory AD 3301 721-2120

Reference Values

2.3 – 4.2 pg/mL