T3 (TRIIODOTHYRONINE), TOTAL

Test Documentation
Specimen Required
Draw blood in a SST. Centrifuge, separate and send 1.0 mL serum (0.4 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Serum: Red-top

Rejection Criteria
Grossly hemolyzed or grossly lipemic specimens. Plasma

Methodology
Chemiluminescence

Stability
Room Temperature: 8 hours; Refrigerated: 72 hours; Frozen: 14 days

Reference Range
Age   Reference range  
1-23 months   117-239 ng/dL  
24 months (2 years)-12 years   105-207 ng/dL  
13 years-20 years   86-192 ng/dL  
21 years and above   60-181 ng/dL  

Performed
Monday-Friday

Turnaround Time3 days
Test CodeT3
CPT-4 Code (s)
84480
LOINC Codes
3053-6

Warde
Medical
Laboratory