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Proficiency test providers

​​​​​​​​​​​By offering proficiency testing in different laboratory fields, proficiency testing providers support laboratory quality assurance. In proficiency testing, laboratories are compared using the same method and the same samples under predetermined conditions. Typically, proficiency testing resembles the laboratory's routine samples and therefore provides a realistic idea of the laboratory's performance. Proficiency testing providers verify that the samples are sufficiently stable and homogenous to ensure that the assessment of the performance of laboratories is reliable. Statistical methods are taken into account in the processing of the results.

FINAS has two accredited proficiency testing providers as its clients. They offer their services to both Finnish and foreign laboratories.

Further information on international proficiency testing providers is available at

Requirements and guidelines (updated 26th of January 2022​)

The accreditation requirement for proficiency testing providers is:

SFS-EN ISO/IEC 17043:2010 Conformity assessment – General requirements for proficiency testing

​Publications of FINAS that support the activity of proficiency testing providers

Accreditation symbol

Accredited bodies are entitled to use the FINAS accreditation symbol, which consists of the FINAS logo, the accredited body's identification number and the accreditation requirement. The FINAS accreditation symbol must be used when the accredited body refers to the accreditation in its reports, for example.

Accredited proficiency testing providers use an identifier in which the identification number of the accredited body is of the format PTXX.



profiency; laboratories; quality