Test Catalog

Test Name

Test ID: FRT3    
T3 (Triiodothyronine), Free, Serum

Specimen Type Describes the specimen type validated for testing

Serum

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Patient Preparation: For 12 hours before this test do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.

Container/Tube: 

Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 0.6 mL

Forms

 

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinical relevant result as determined by the Testing Laboratory

0.5 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

Hemolysis

Mild OK; Gross reject

Lipemia

Mild OK; Gross OK

Icterus

NA

Other

NA

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTime
SerumRefrigerated (preferred)7 days
 Frozen 90 days