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Test Code FT3 Triiodothyronine, Free (Free T3)

Additional Codes

Hospital Ordering Code
LAB137  T3, FREE

Specimen Requirements

Container/Tube Type: 

Green (Lithium Heparin)
Lime Green (Heparin Plasma Separator Tube)
Red (No Additive)
SST (Serum Separator)

 

Preferred Collection Container: 

Green (Lithium Heparin)
Light Green (Heparin Plasma Separator Tube)

 

Also Acceptable Collection Container: 

Plasma from Lavender tubes is acceptable but will not route in the Laboratory Information System (Sunquest).

 

Transport Information: 

1.5 mL blood/1.0 mL serum

 

Minimum Sample Volume: 

0.6 mL blood/0.2 mL serum

Stability

Refrigerated Stability: 

7 days

 

Frozen Stability: 

1 month

 

Ambient Stability: 

4 hours

CPT

84481

Performing Laboratory

Pathology Laboratory, UnityPoint Health, Des Moines

Methodology

Electrochemiluminescence

Alias

Free T3 (Triiodothyronine), FT3 (Free Triiodothyronine), T3 (Triiodothyronine), Free, Serum, Triiodothyronine, Free, Free T3 Only, Serum

Performance

Daily

 

Analytical Time: 

2 - 24 hours

 

Testing Laboratory: 

Pathology Laboratory

 

Laboratory Section: 

Core Laboratory