Quantiferon Gold - Exposure to M. tuberculosis Test | Austin Pathology

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Quantiferon Gold - Exposure to M. tuberculosis

Alternate Names	Quantiferon Gold TB, Quantiferon Gold IT, IGRA, Interferon Gamma, QFG, QG
Laboratory	Biochemistry
Specimen	Blood
Container	See collection instructions
Additional Collection Instructions	Four special blood collection tubes packaged together with instructions and available from the Specimen Collection Centre or Microbiology: must be collected in the following order 1 x grey top tube (Nil) 1 x green top tube (TB Antigen 1) 1 x yellow top tube (TB Antigen 2) 1 x purple top tube (Mitogen Control) Collect 1 mL blood into each tube and mix by inversion 10 times. Thorough mixing is required to dissolve the antigen coated onto the inside of the tube. Please ensure tubes are filled to a level within the line marker; under-filled and over-filled tubes are unsuitable for testing. All 4 tubes MUST be collected and tied together with an elastic band after collection. Samples for Quantiferon Gold should NOT be collected on Saturdays.
Minimum Adult Volume	None
Minimum Paediatric Volume	None
Frequency	Weekly

These PDF documents can be downloaded for your reference

Order of Draw (PDF)

Swab Collection Guide (PDF)

Pre-Transfusion Specimen Requirements (PDF)

Requirements for Pathology Service (PDF)

Test Code	QTB
Container ID	QTB1, QTB2, QTB3, QTB4
Storage Instructions	Store specimen at room temperature
Transport Instructions	Transport at room temperature
Additional Transport Instruction	Instructions for: Regional and Heidelberg Specimen Receptions Samples which have not undergone incubation or centrifugation should be kept at room temperature. After processing (incubation & centrifugation) samples should be transported at 4°C.
Laboratory Notes	Quantiferon Gold samples must be incubated at 37°C for 16 - 24 hours. Note: Samples collected on Saturdays can still be accepted, but staff must ensure the samples are spun the following day.