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TB Testing

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
    repeat tests
  • 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
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