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Ask the Experts Q & A

Q: Should employees who have positive PPDs continue to be tested yearly? Do they need to have a chest x-ray every year?

A: You do not need to ever repeat the PPD skin test for employees who have tested positive. Perform a chest x-ray after the first positive PPD, but do not repeat it yearly unless the employee:

  • Is a recent converter
  • Is a close contact of someone with TB
  • Has a medical condition that increases his/her risk for TB
  • Injects drugs

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