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How UK Employers Should Investigate and Confirm a Positive Saliva Cotinine Test for Suspected Workplace Vaping (2026 Guide)
This practical 2026 guide explains a step‑by‑step, legally compliant protocol for UK employers investigating a presumptive positive saliva cotinine test: from consent and on‑site screening to UKAS confirmatory testing, chain of custody, HR interviews and prevention tips. Follow these steps to ensure fair, proportionate and GDPR‑compliant handling of suspected workplace vaping.
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