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Drugs of Abuse in Oral Fluid (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 April to March


Round dates


Despatch date

Reporting deadline

DO131 04 Mar 2019 08 Apr 2019
DO132 24 Jun 2019 29 Jul 2019
DO133 23 Sep 2019 28 Oct 2019
DO134 02 Dec 2019 06 Jan 2020
DO13502 Mar 202006 Apr 2020



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