Producing reliable results in laboratories depends not only on using the right analytical methods, but also on the objective evaluation of measurement results, continuous monitoring of technical competence, and the ongoing improvement of quality processes.
PT Nexus – Connecting Laboratories. Advancing Quality. provides Proficiency Testing (PT) and Interlaboratory Comparison (ILC) programs through a modern, scientific, and digital approach designed to support laboratories in evaluating and improving technical performance.
Going beyond traditional proficiency testing, PT Nexus brings together scientific evaluation, impartiality, traceability, digital process management, flexible program design, secure data management, and transparency.
Our goal is not only to compare laboratory results, but to transform the data produced into valuable insight that helps laboratories strengthen technical competence, monitor measurement performance, and continually improve quality management systems.
Selecting the right PT provider is critical for laboratories—particularly in terms of technical reliability, evaluation methodology, data management, and reporting quality.
PT Nexus offers a comprehensive approach that places laboratory needs at the center of proficiency testing and interlaboratory comparison processes.
The reliability of proficiency testing depends on proper program design and evaluation using appropriate scientific methods. PT Nexus aims to base PT and ILC program design and evaluation on relevant technical requirements, recognized standards, and fit-for-purpose statistical approaches.
A scientific and systematic approach is adopted at every stage— from planning test materials to evaluating results. This helps laboratories assess performance not through a single outcome, but through objective and meaningful data.
For PT Nexus, a scientific approach is the foundation of reliable proficiency testing.
Impartiality is essential for a trustworthy PT program. PT Nexus evaluates participating laboratories according to predefined, objective criteria aligned with the program design. Regardless of participant identity or organizational characteristics, the focus remains on technical and statistical assessment of results. This approach supports laboratories in reviewing their own performance from a more objective perspective.
Impartiality is an indispensable element of PT Nexus’s quality mindset.
A reliable PT program is more than result evaluation. It requires controlled management of multiple stages such as application, participant records, program documents, test material processes, result entry, technical evaluation, and reporting. PT Nexus aims to manage all information and records generated throughout the program in a systematic manner.
This approach is designed to ensure the PT process is:
Traceability is a key component of reliable laboratory performance assessment.
As laboratory quality processes become digital, proficiency testing should not remain outside this transformation. PT Nexus aims to make PT and ILC processes more accessible and traceable through the PT Nexus Online digital infrastructure.
Through PT Nexus Online, laboratories can manage processes digitally, including:
In this way, PT Nexus enables laboratories to follow PT processes through a more organized and centralized digital structure.
One platform. More controlled processes. Easier tracking.
Every laboratory differs in scope, methods, and technical needs. Therefore, PT Nexus aims to structure PT programs as much as possible in line with laboratory and sector-specific requirements.
In addition to standard PT programs, solutions can be provided to design customized PT and ILC programs for specific technical needs. The program structure is developed to fit the need by considering program scope, test materials, participant structure, evaluation approach, and technical requirements.
Laboratory needs may vary. PT Nexus aims for the flexibility to adapt to those differences.
In PT programs, laboratory results, technical records, and participant information are sensitive and valuable data. PT Nexus places emphasis on handling information through authorized user access and a secure data management approach. With controlled digital workflows, participants are intended to access program-related information and documents appropriately and securely.
A reliable PT process is not only about producing reliable results, but also about managing data responsibly.
It is important for laboratories to clearly understand a program’s scope and evaluation approach before participating. PT Nexus aims to present program conditions, technical scope, evaluation criteria, and key participant information as clearly and understandably as possible.
Transparent program management supports correct expectations, easier process tracking, and healthier evaluation of results.
For PT Nexus, transparency is a key element of long-term trust with laboratories.
Evaluating a PT outcome only as “successful” or “unsuccessful” may mean not fully using the opportunities offered by the data.
A PT result can provide valuable feedback for:
PT Nexus values interpreting PT outcomes in a way that contributes to laboratories’ continual improvement.
Interlaboratory Comparison (ILC) is an important quality assessment tool that enables comparison of measurement or analysis results produced by different laboratories according to a defined approach.
Through ILC programs, laboratories can:
PT Nexus considers PT and ILC programs as complementary tools that support laboratories’ quality management systems.
