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QuantiFERON® TB Gold In-Tube (QFT)

Updated

8/15/2013

Other Names Interferon Gamma Release Assay for tuberculosis (IGRA)
How to Order
Check the appropriate box, under MYCOBACTERIUM, on the General Microbiology Request Form included in the Collection Kit.
Availability
All clients
Methodology
Interferon-Gamma detection and quantification by ELISA in response to TB antigens
Performed
Daily during business hours
Time to Reporting
2 to 4 days
 
CPT Code
86480


Specimen Collection Details

Collection
Obtain a QFT collection kit from the laboratory and draw 1ml of blood into each of the 3 specimen tubes. Shake each tube vigorously for 5 seconds.
Optimal Volume
1.0 ml per tube (1.0 ml line is printed on tube label)
Minimum Volume
0.8 ml  (max 1.2 ml)
Handling
Maintain all tubes at room temperature. Do
not centrifuge.
Transport
Tubes must be sent at room temperature and be received in the laboratory within 16 hours of collection, M - F, between 8:00AM and 5:00PM.
Rejection Criteria
Unlabeled specimens, specimens not submitted as per collection instructions or without completed requisition forms will not be processed.
Comments
Detailed instruction for collection and submission of QFT samples are printed on the back of the General Microbiology Request Form. For addition information or assistance, please contact the laboratory at 503.693.4100.