TRIIODOTHYRONINE, TOTAL

Mnemonic

T3T

Synonym

Total T3 - Total Serum Triiodothyronine

Specimen Collection Requirements

Collect

Serum, one 5.0 mL gold (SST), 7.0 mL red top tube or Li Heparin Plasma

Handling

Allow serum to clot completely at room temperature (minimum: 30 minutes). Centrifuge and separate serum from cells ASAP.

Preferred Volume

1.0 mL

Minimum Volume

0.3 mL

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed specimens, plasma

Stability

AFTER SEPARATION FROM CELLS: Ambient (20-25°C): 8 hours; Refrigerated (2-8°C): 48 hours; Frozen (at or below -20°C): 3 months

Testing Information

Performed

Sun - Fri

Method

Chemiluminescent Immunoassay

Referral Lab

T3T

Reference Values

Reference Values

ADULT 16-150 years: 0.80-2.00 ng/mL

CPT Codes

84480

Last Updated: Thursday, January 5, 2017 03:42:32 AM