QuantiFERON‑TB Gold Plus, 4‑Tube (Change effective as of 05/20/24: Refer to 3017562)
Also known as: QFT-4
Use
This assay aids in the detection of latent tuberculosis infection (TB) in individuals at increased risk. Positive predictive value is lower in low‑risk populations, and results are to be used alongside risk assessment, radiography, and other clinical evaluations. May be used in individuals vaccinated with BCG. ([ltd.aruplab.com](https://ltd.aruplab.com/Tests/Pub/3017562?utm_source=openai))
Special Instructions
This test has been superseded as of May 20, 2024; clients should refer to ARUP test code 3017562. ([ltd.aruplab.com](https://ltd.aruplab.com/Tests/Pub/3000399))
Limitations
Not provided.
New York Approved
Methodology
Immunoassay (ELISA)
Biomarkers
Result Turnaround Time
1-4 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
0.8 mL per tube minimum; 1 mL typical
Minimum Volume
0.8 mL per tube
Container
QuantiFERON‑TB Gold Plus (Standard) 4‑Tube Collection Kit (ARUP supply #54012) or High Altitude kit (supply #54010)
Collection Instructions
Collect in ARUP‑provided 4‑tube kit; tubes may remain ambient up to 16 hours before incubation. Transport plasma in original containers. ([ltd.aruplab.com](https://ltd.aruplab.com/Tests/Pub/3017562?utm_source=openai))
Storage Instructions
Refrigerated
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Ambient up to 2 hours post‑incubation; ambient up to 16 hours pre‑incubation |
| Refrigerated | 1 month post‑incubation |
| Frozen | Unacceptable |