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Drugs of abuse in oral fluid scheme (DOF)

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  • UKAS accredited proficiency testing scheme
  • External Quality Assessment (EQA) designed for laboratories and on-site screening clinics that provide routine services for detection of drugs in oral fluid
  • Participants receive sets of three test materials at quarterly intervals with 4 weeks being allowed for drug analysis
  • Test materials consist of 1.7ml oral fluid obtained from volunteers and known drug users
  • Mixtures of drugs with their metabolites from 6 major classes:-
  • - Amfetamines & stimulants
    - Cannabinoids
    - Cocaine & metabolites
    - Minor tranquillizers
    - Non-opiate narcotics
    - Opiates
  • Participants select to make their reports relative to one of two sets of threshold drug concentrations
  • Thresholds are recommended by the European Workplace Drug Testing Society
  • Scheme operates from September to March

Round dates


Despatch date

Reporting deadline

DO120 27 Jun 2016 01 Aug 2016
DO121 26 Sep 2016 31 Oct 2016
DO122 28 Nov 2016 09 Jan 2017
DO123 06 Mar 2017 10 Apr 2017


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