Guidance

Carbon monoxide (CO): algorithm for smoking cessation clinics

Algorithm for smoking cessation clinics to identify patients with possible exposure to CO.

• From: UK Health Security Agency
• Published: 1 March 2011
• Last updated: 17 November 2025 — See all updates

Documents

Carbon monoxide (CO): smoking cessation algorithm

Ref: PHE publications gateway number 2015525

PDF, 131 KB, 2 pages

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Details

This content was originally produced by Public Health England (PHE). This content is now owned and managed by the UK Health Security Agency (UKHSA)

For healthcare professionals to use when readings of carbon monoxide (CO) in exhaled breath remain unusually higher than expected in patients who insist they have complied with the smoking cessation programme.

This algorithm also includes advice and key telephone numbers for services providing further advice and practical assistance.

Published 1 March 2011

Last updated 17 November 2025 + show all updates

1. 17 November 2025

   Rebranded as an UKHSA page.

2. 18 December 2015

   Updated leaflet

3. 1 March 2011

   First published.