QuantiFERON TB (QFT); TB1 Antigen Minus Nil; TB2 Antigen Minus Nil; Mitogen minus Nil; Nil; QFT Comment
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QuantiFERON-TB Gold Plus 4 Tube, Blood
Test ID: QTBHSC B
Test
Method
Enzyme Linked Immunosorbent Assay (ELISA)
Method Description
IGRA (Interferon-Gamma Release Assay), IFN-gamma detection by ELISA
Report Includes
Specimens
Blood
Test Version
16-Sep-2025
Specimen
Specimens
Blood
Collection Containers
QFT-Nil control (gray cap) tube
QFT-TB1 antigen (green cap) tube
QFT-TB2 antigen (yellow cap) tube
QFT-Mitogen control (purple cap) tube
Sample Volume
1.0 mL x 4
Collection & Handling
Collection Instructions
» View collection instructions
To obtain the Quantiferon collection tubes, please contact our Client Care team at info@iclabs.ca or 416-422-3000 ext. 300.
Stability
| Refrigerated | 28 days |
|---|---|
| Frozen | Unacceptable |
Rejection Criteria
| Specimen | Frozen |
|---|
Test Version
16-Sep-2025
Performance / Interpretation
Method
Enzyme Linked Immunosorbent Assay (ELISA)
Method Description
IGRA (Interferon-Gamma Release Assay), IFN-gamma detection by ELISA
Turnaround Time
16 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| QuantiFERON TB (QFT) |
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Diagnosing or excluding tuberculosis disease and assessing the probability of LTBI, which requires a combination of epidemiological and clinical findings that should be taken into account when interpreting QuantiFERON TB (QFT) results.
Note: The test results have been generated in an ISO15189 Plus laboratory accredited through AC Diagnostics, and are for medical purposes only. The laboratory is not forensically accredited.
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| TB1 Antigen Minus Nil | IU/mL |
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| TB2 Antigen Minus Nil | IU/mL |
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| Mitogen minus Nil | IU/mL |
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| Nil | IU/mL |
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| QFT Comment |
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Test Version
16-Sep-2025
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| QTBHSC B | 66119QuantiFERON TB (QFT) | |
| 66120TB1 Antigen minus Nil | IU/mL | |
| 66121TB2 Antigen minus Nil | IU/mL | |
| 66122Mitogen minus Nil | IU/mL | |
| 66123Nil | IU/mL | |
| 66124QFT Comment |
Test Version
16-Sep-2025