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Therapeutic Drugs (TDM)

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  • UKAS accredited proficiency testing scheme
  • The LGC Therapeutic Drugs Monitoring (TDM) proficiency testing scheme provides independent performance assessment for the routine quantification of a wide range of anti-epileptic and other therapeutic drugs.
  • TDM is a measurement of specific drug concentration levels at timed intervals in patients, usually through blood/serum samples, and is necessary where control of drug concentrations is required to achieve optimum treatment for the patient, or where there is a narrow range between the therapeutic and toxic levels.
  • The operation of the LGC TDM 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 January to December


Round dates


Despatch date

Reporting deadline

TM18421 Jan 201925 Feb 2019
TM18521 Jan 201925 Mar 2019
TM18621 Jan 201923 Apr 2019
TM18715 Apr 201920 May 2019
TM18815 Apr 201917 Jun 2019
TM18915 Apr 201915 Jul 2019
TM19029 Jul 201902 Sep 2019
TM19129 Jul 201930 Sep 2019
TM19229 Jul 201928 Oct 2019
TM19321 Oct 201925 Nov 2019
TM19421 Oct 201906 Jan 2020
TM19521 Oct 201903 Feb 2020

Drugs used for the Treatment of substance related disorders 2  products available
Psychoactive Drugs 32  products available
Psychostimulants 1  products available
Smoking Related Drugs 1  products available
Therapeutic Drugs 8  products available


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