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Proficiency Services Ltd (PSL) was formed in 1999 to provide an independent proficiency service for laboratories. Our sole business is the provision of Proficiency Testing and related services. We deliver the LabChek range of Proficiency Programmes.

The range of LabChek programmes has expanded since the company formed, and we now provide Proficiency Samples and Secondary Reference Materials to more than 200 laboratories in 18 countries.

Our commitment is to provide customers and other stakeholders (consumers of products tested in participating laboratories, regulatory and accreditation agencies) with valid assessments of analytical performance. We provide the highest standards of accuracy and confidentiality in our work.

Our core strengths are:

  • Understanding laboratories' needs. With help from our Technical Advisory Groups, our experienced staff ensure that the design and operation of LabChek programmes is appropriate to the needs of all participating laboratories.
  • Partnerships with industry groups enable us to draw on current industry knowledge and to align the development of our programmes with industry needs.
  • Our approachable and service-oriented team are dedicated to providing excellent and cost-effective service, enabling us to deliver robust and reliable programmes to laboratories internationally.

In each programme, we invite leading specialists from related industries and participating laboratories to contribute to our Technical Advisory Groups. These groups advise us on the design and operation of each LabChek programme, to ensure that our procedures for:

  • selection of sample matrices
  • sample preparation
  • data analysis
  • proficiency assessment

continue to be the most appropriate to the needs of participating laboratories, and wider stakeholders.

Our clients tell us:

"No-one likes to 'get it wrong', but we find the LabChek approach to proficiency provides the information in a manner that helps us to look at our own systems to find improvement"

"The staff at LabChek are friendly, professional and approachable, so it's easy to communicate with them"

"The turn-around time and the attention to timetables really helps with our lab scheduling"

"Thanks for your efforts organising the proficiency trials - great value"