L104

Test CODE NAME

L104

T3 (Triiodothyronine ), Reverse/RT3, NY State

Methodology: Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Performed: Twice a week
Reported: 4-5 days
Specimen Required: Collect: Plain Red OR Serum Separator Tube (SST) - 1.0 ml serum. 
Specimen Preparation: Allow serum specimen to clot completely at room temperature. Separate serum from cells ASAP or within two hours of collection. If a tube other than a gel-barrier tube is used, transfer separated serum to a plastic transport tube. 
Storage/Transport Temperature: Refrigerated. 
Unacceptable Conditions: Grossly hemolyzed specimens 
Stability: Ambient/Refrigerated: 1 week; Frozen: 1 month 
NOTE: * This test is approved for New York patients ONLY, please refer to test code 5331 for specimen requirements for all other States . * 
Performing Laboratory 
LabCorp Laboratory Corporation of America
CPT Code(s): 84482