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Test Code T3 T3 (Triiodothyronine), Total

Additional Codes

Hospital Ordering Code
LAB136   Triiodothyronine (T3) 

Specimen Requirements

Preferred Collection Container: 

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

 

Also Acceptable Collection Container: 

Green No Gel (Lithium Heparin)
Red (No Additive)
Plasma from Lavender tubes is acceptable but will not route in the Laboratory Information System (Sunquest).

 

Collection Information: 

Collect blood in a Light Green (Lithium Heparin Plasma Separator Tube) or SST (Serum Separator) tube. Green No Gel (Lithium Heparin) and Red (No Additive) are also acceptable.

 

Transport Information: 

Centrifuge and aliquot 0.5 mL of serum or plasma into a plastic transport vial. Send refrigerated.

 

Minimum Sample Volume: 

0.25 mL of serum or plasma (approximately 0.5 mL of whole blood based upon a normal patient hematocrit)

Stability

Refrigerated Stability: 

7 days - Preferred

 

Frozen Stability: 

1 month

 

Ambient Stability: 

2 hours

Performing Laboratory

Pathology Laboratory, UnityPoint Health, Des Moines

CPT

84480

Methodology

Electrochemiluminescence

Performed

Monday-Friday 8:00a to 10:00p
Saturday-Sunday 9:00a to 5:00p

 

Analytical Time: 

3 hours

 

Testing Laboratory: 

Pathology Laboratory

 

Laboratory Section: 

Core Laboratory

Alias

T3, Total T3