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QuantiFERON®-TB Gold Plus, 1 Tube

Message
10ml or 6ml lithium heparin(green top) tubes are acceptabile. If using the 6ml the tube MUST be full, the minimum is 5ml.


Test Code
QGTB4PLUS


CPT Codes
86480

Preferred Specimen
10 ml lithium heparin (green top) tube


Minimum Volume
6 mL Lithium Heparin


Other Acceptable Specimens
Quantiferon TB Gold Plus Tubes
Nil (grey top), TB1(green top), TB2 (yellow), Mitogen (purple top)


Instructions
Mix lithium heparin tubes after collection to prevent clotting, and allow to equilibrate at room temperature for a minimum of 15 minutes to a maximum of three hours after collection.  Refrigerate at 2-8o C


Transport Temperature
Refrigerate (cold pack)


Specimen Stability
Room Temperature:    16 hours

Refrigerated:              48 hours

Frozen:                      unacceptable


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimen stability exceeded

Frozen whole blood

Specimens that have been incubated

Improperly labeled specimen 

Expired collection tube

Improper collection tube

Quantity not sufficient

Specimen leaked in transit


Methodology
Quantiferon-TB Gold Plus interferon-gamma detection by ELISA

Setup Schedule
Monday - Friday


Report Available
4 DAYS


Reference Range
Negative


Performing Laboratory
Meritus Medical Laboratory 11110 Medical Campus Rd Hagerstown, MD 21742


Last Updated: August 4, 2025


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.