TBTuberculosis Screening
Testing for tuberculosis infection — by skin test (PPD) or blood test (IGRA) — common for health-care and at-risk workers.
Key facts
- Detects TB infection via skin test (PPD) or blood test (IGRA).
- Health systems screen on hire and periodically.
- Positives get chest-X-ray follow-up tracked in the record.
What it means
TB screening uses the tuberculin skin test (PPD/Mantoux) or an interferon-gamma release assay (IGRA) blood test to detect infection. Health systems screen on hire and periodically, tracking two-step baselines, conversions and follow-up. Results, due dates and chest-X-ray follow-up for positives all live in the surveillance record.
Frequently asked
How is TB screening performed?
By a tuberculin skin test (PPD/Mantoux) or an interferon-gamma release assay (IGRA) blood test. Health systems screen on hire and periodically, tracking two-step baselines and conversions.
What happens after a positive TB test?
A positive result triggers follow-up, typically including a chest X-ray to rule out active disease. Results, due dates and follow-up all live in the surveillance record.
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