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Test Code TT3 T3 (Triiodothyronine) Total, Plasma or Serum

Additional Codes

EPIC CODE

LAB2406

Performing Laboratory

Bronson Laboratory Services-Chemistry

Reference Values

80-200 ng/dL

Methodology

Chemiluminescent Immunoassay

Specimen Requirements & Patient Preparation

Patient Preparation: For 12 hours before this test do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.   Biotin can interfere with many immunoassay tests.

Submit only 1 of the following specimens:


Preferred

Specimen Type: Serum
Container/Tube: Gold top serum gel or Plain
red-top tube is also acceptable.

Specimen Volume: 5 mL

Specimen Minimum Volume: 1 mL


Alternate

Specimen Type: Plasma
Container/Tube: Green top (heparin) or PST
Specimen Volume: 5 mL

Specimen Minimum Volume: 1 mL

Specimen Transport Temperature

Refrigerate

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

84480