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Regional Medical Lab
Test Directory


TB Gold Quantiferon Plus

Order Name TB Gold Plus
Test Number 5587326
Revision Date 02/07/2018
Test Name Methodology LOINC Code
Immunoassay 88517-8 
Immunoassay 64084-7 
TB Mitogen-NIL
Immunoassay 71774-4 
TB NIL Value
Immunoassay 71776-9 
TB Gold Interp
Interpretive information. 71773-6 
Instructions Collect: Preferred - Whole blood in Dark Green no gel Lithium Heparin, 6 ml tube (Minimum 4 ml required)
             Alternate (must be trained and signed off by RML personnel prior to collecting!) - Whole blood in Quantiferon TB Gold Plus 4 tube kit (0.8 ml
             minimum per tube required)

Specimen Prep: Lithium HeparinFill tube completely, gently mix by inverting several times, incubate at room temp for a minimum of 15 minutes and ship 
                             to lab refrigerated.
                             TB Gold Plus 4 tube kit: Immediately after filling, gently shake tube 10 times to coat the inner surface of the tube walls (overly vigorous
                              shaking may lead to aberrant results), transport to the lab at room temp (must be received in-lab at RML within 16 hours of collection OR 
                              incubated at 37°C for 16 - 24 hours at the client site prior to transport to the lab)

Stability: Lithium Heparin - 48 hours refrigerated
                TB Gold Plus 4 tube kit - 16 hours room temp, unincubated. Once incubated at 37°C for 16 - 24 hours, tubes are stable for 3 days at room
                 temperature and refrigerated.
Testing Schedule Monday - Friday 
Expected TAT 4 - 6 days 
CPT Code(s) 86480
Lab Section Immunology - Serology