text.skipToContent text.skipToNavigation

Drugs of Abuse in Oral Fluid (DOF)

daps UKAS Logo
  • UKAS accredited proficiency testing scheme
  • The LGC Drugs in Oral Fluid (DOF) scheme provides performance assessment for laboratories and clinics who provide analytical services for drugs in oral fluid. Samples are provided as real human oral fluid.
  • Advances in technology have enabled oral fluid testing for the presence of many drugs. Oral fluid collection is often less invasive, relatively easy to perform, and, in forensic situations, can be achieved under close supervision to prevent adulteration or substitution of the samples.
  • Drug testing is extremely accurate and reliable when all aspects of the testing process are carried out correctly. However, if poor procedures and inadequate testing methods are utilised, the information obtained may be very misleading and inaccurate.
  • To minimise this risk, laboratories should perform routine quality control tests and participate in suitable PT/EQA schemes.
  • The operation of our DOF scheme is supported by an Advisory Group consisting of members of the professional bodies, scheme participants, and others experienced in the field. The scheme reports on the performance of U.K. participants (who have clinical responsibilities) to the National Quality Assurance Advisory Panels for Chemical Pathology.
  • 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



PT online reporting


PT certification & accreditation


Order PT now



Punchout session timeout warning

Your punchout session will expire in 1 min 59 sec.

Select "Continue session" to extend your session.