Interlaboratory comparison exercises play an essential role by allowing laboratories to evaluate their performance against reference standards and other participants in the sector. The quality and reliability of laboratory analyses are fundamental aspects to ensure accurate and consistent results.
At GSC we offer interlaboratory comparison exercises and specialize in ensuring that laboratories meet the highest quality requirements. Want to know how? Here we explain how interlaboratory comparisons can strengthen the reliability of your tests.
What are interlaboratory comparison exercises and why are they important?
Interlaboratory comparisons consist of evaluating a laboratory by comparing its results with those obtained by other laboratories analyzing the same sample. These tests are conducted under clear timelines, including deadlines for sample receipt, result reporting, etc. This process helps determine a laboratory’s technical competence in a specific area.
Types of Interlaboratory Comparison Exercises
There are different types of interlaboratory comparisons depending on the objectives and the sector in which they are applied. At GSC we provide a year-round testing program tailored to all types of laboratories across different industries. Some of the most widely used exercises include:
Proficiency Tests
These exercises assess a laboratory’s ability to perform measurements. A consensus value is usually established from the mean/median of participants and each laboratory’s result is then compared against it using statistics such as the z-score.
They are mandatory for laboratories accredited under ISO 17025, which must participate with accredited providers whenever available on the market.
Collaborative Test
This exercise evaluates an analytical method. Only laboratories with expertise in the method under evaluation participate in this type of test.
Certification Test
In this case, a property value is assigned to a material (sample) that is compared among different laboratories (variability of methods).
Benefits of Interlaboratory Comparison Exercises
- Ensure test accuracy by identifying deviations or systematic errors.
- Improve technical competence of staff through methodology validation.
- Requirement for ISO 17025 accreditation: ISO 17025, except for some official laboratories, is never mandatory, but it is a recognized mark of quality and technical competence for those who achieve it.
- Strengthen laboratory reputation, generating credibility with clients and regulatory bodies.
How Do Interlaboratory Comparisons Contribute to Continuous Improvement?
At GSC, we know that continuous improvement is fundamental for laboratories. Interlaboratory comparisons allow:
- Detecting and correcting errors in analytical processes before they affect result quality.
- Optimizing methods and procedures to ensure laboratories operate under best practices.
- Training staff in interpreting results and implementing corrective actions.
Relationship Between Interlaboratory Comparisons and ISO 17025 Accreditation
To obtain and maintain ISO 17025 accreditation, laboratories must demonstrate their technical competence and the validity of their results. Interlaboratory comparisons are a key tool in this process, as they allow:
- Demonstrating the reliability of tests to accreditation bodies.
- Identifying areas for improvement in analysis and measurement processes.
- Proving regulatory compliance, increasing client and regulatory trust.
How to Participate in Interlaboratory Comparisons with GSC
At GSC we offer interlaboratory comparison programs designed to help laboratories evaluate their performance and improve analytical accuracy. To participate in these exercises:
- Contact our experts to identify the program best suited to your needs.
- Receive the samples and follow the established procedures.
- Carry out the analyses in your laboratory according to the indicated protocols.
- Submit the results for evaluation and receive a detailed report with comparative performance.
- Implement improvements and adjust procedures based on the findings obtained.
In this way, interlaboratory comparison exercises are an indispensable tool to ensure laboratory reliability and strengthen competitiveness in the sector. At GSC we provide specialized solutions to help laboratories improve analytical accuracy, comply with regulations, and earn client trust.
If you want to ensure the quality of your tests and stand out in the market, contact us and join our interlaboratory comparison programs.
