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HelpTest Code TBG Thyroxine Binding Globulin
Specimen Draw Volume
Volume: 3.0 mL
Minimum Volume: 2.0 mL
Processing Instructions
Draw in a Red or Gold SST top tube. Allow tube to clot for 30 minutes, centrifuge, separate serum from cells and transfer to an aliquot tube. Store and transport frozen.
Stability
Stability: Refrigerated 2 days, Frozen 30 days.
Performed Test Frequency
Monday | Thursday
Methodology
Chemiluminescence
CPT(s)
84442
Cerner Order Code
TBG
Acceptable Collection Tube(s)
Preferred: Gold SST
Acceptable: Red Top
Rejection Criteria
Rejection criteria: Hemolyzed, grossly lipemic or plasma specimens.
Performing Location
Warde Medical Laboratory, Ann Arbor, MI.
Turnaround Time
1 - 4 Days