Update information

September 2020: We removed Microtest from the recommendations in this guidance because it is no longer available to the NHS. Details are explained in the review decision. Updated information is marked with [2020].

Minor changes since publication

December 2025: Diagnostics guidance 24 has been migrated to HealthTech guidance 413. The recommendations and accompanying content remain unchanged.

ISBN: 978-1-4731-7368-2