ARUP's Laboratory Test Directory
| 0051231: QuantiFERON®-TB Gold (Local Clients Only) |
![[ image for: Time Sensitive]](icon_1.jpg){kind=icon} | Time Sensitive |
| Test Mnemonic: QFTG-TB | |
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Methodology: Cell Culture/Enzyme-Linked Immunosorbent Assay
Performed: Sun-Sat Reported: 2-7 days |
| Specimen Required: | |
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Collect: One 6 mL Greiner Bio One Vacuette® brand green (sodium heparin or lithium heparin)
Transport: 6 mL whole blood at 20-25°C. (Min: 5 mL) Pediatric Collection/Transport: 5 mL whole blood at 20-25°C. Remarks: Local Clients Only. Sample must be collected within 12 hours of test performance. Client must contact Cellular and Innate Immunology (800) 242-2787, extension 3144 to initiate point-to-point delivery service. LIVE LYMPHOCYTES REQUIRED. CRITICAL AMBIENT. Do not refrigerate or freeze. Unacceptable Conditions: Refrigerated or frozen samples. BD Vacutainer® tubes. Stability: Ambient: 12 hours; Refrigerated: Unacceptable; Frozen: Unacceptable |
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| Reference Interval: |
| By report |
| Interpretive Data: | |
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Positive: M. tuberculosis infection likely. Negative: M. tuberculosis infection unlikely, but cannot be excluded especially when: 1. Any illness is consistent with TB disease, 2. Likelihood of progression to disease (e.g., because of immunosuppression) is increased. Indeterminate: Results are indeterminate for responsiveness to M. tuberculosis antigens ESAT-6 or CFP-10. Diagnosing or excluding tuberculosis disease, and assessing the probability of latent tuberculosis infection requires a combination of epidemiological, historical, medical, and diagnostic findings that should be taken into account when interpreting QuantiFERON®-TB Gold results. |
| Note: | |
| The intended use of the QuantiFERON®-TB Gold assay is to detect latent TB infections among persons at increased risk for TB. The ability of the QuantiFERON®-TB Gold assay to predict the progression of latent tuberculosis infection to active tuberculosis has not been evaluated. For questions about collection and stability of sample please call Cellular Immunology at (801) 583-2787, extension 3144. |
| CPT Code(s): | |
| 86480 |