QuantiFERON-TB Gold (QFT-G) blood testing replaces the PPD skin test. QFT-G more
efficiently detects latent tuberculosis so your employees will rarely get false positives.
Other advantages include:
- Accuracy is not affected by prior BCG (Bacillus Calmette-Guerin test, as well as possible
- Test results are not affected by the booster phenomenon (i.e., increased sensitivity on
subsequent test, leading to false-positive results)
- Test results are not subject to reader bias
- Regulatory approval in California has amended Title 22 to allow TB testing using QFT-G