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T3 Free *

SIM

15407 

CPT

84481 

Synonyms

Free T3; Triiodothyronine, Free; Serum Free T3; Unbound T3 

Specimen Type

Serum 

Container

Red-top or gold-top tube

Collection Instructions

Volume

Volume: 0.8 ml. 
Minimum  volume:  0.5 ml (This does not allow for repeat testing) 

Additional Information

Evaluate thyroid function and assess abnormal binding protein disorders

Patient Preparation

Specimen Processing Instructions

 Once in the lab,separate serum from cells if using red-top tube

Transport Requirements

Refrigerate

Specimen Stability

 Refrigerated : 14 days 

Rejection Criteria

Plasma; gross lipemia

Reference Range

Reference range accompanies report

Critical Value

 

Test Includes

Free T3 

Methodology

Electrochemiluminescence immunoassay (ECLIA) 

Testing Frequency

 

LCA

010389 

Reviewed By

Lisa McBride                   

Reviewed Date

2/20/2018 

Supplemental

* Denotes Reference Lab Test

Reviewed by Lisa McBride on February 20, 2018

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