What is Proficiency Testing and How to Choose the Right PT Scheme

Proficiency testing (PT), also known as external quality assessment (EQA), involves introducing samples with known but undisclosed content into a laboratory's routine testing procedures.

At UK NEQAS IIA, we are a global proficiency testing provider offering an independent EQA service, as well as providing training resources for participants in our Digital Academy. Read more about what proficiency testing is, and how to choose the right PT scheme. 

What is Proficiency Testing?

In proficiency testing, the organising laboratory will prepare the samples for examination by the participants, who will then report their findings. The organising lab will analyse these results and compile a report for the participants to evaluate.

Proficiency testing is essential for ensuring laboratories achieve accurate results. By assessing how well laboratories perform specific tests or measurements, it offers valuable insights into the effectiveness of their quality assurance systems. This process helps maintain high standards and ensures reliable performance. 

Why is Proficiency Testing Important?

Proficiency testing is crucial because it offers staff valuable insights into their laboratory's performance, highlights potential issues, and enhances the quality of examinations. This is crucial for scientific research, medical diagnostics, and various industries relying on precise measurements and data.

Additionally, proficiency testing allows for performance comparison with other laboratories on both national and international levels. It also demonstrates to clients, colleagues, and accreditation bodies a commitment to maintaining high standards of quality.

Why Might There Be Inaccuracies in Results?

Inaccuracies can occur for a number of reasons, including:

• Incorrectly submitted results
• Systematic errors
• Staff training 
• Contamination
• Clerical errors
• False test results 

What are the Benefits of Proficiency Testing

• ISO accreditation - participating in a proficiency testing scheme is essential to achieving laboratory accreditation to ISO 17025 and 15189.
• Managing risks - PT safeguards consumers, brand reputation, and profitability by assisting laboratories in identifying early warning signs and enabling quick resolution of issues.
• Staff development - PT schemes can serve as an ongoing tool for staff education and improvement, enabling managers to identify training needs and provide targeted training accordingly.
• Verifies methods - laboratories can utilise PT results to verify their measurement processes, such as methods, sample handling, equipment, and calibration.
• Problem identification - PT can help find problems and resolve them quickly 
• Quality - participating in a PT scheme can demonstrate a commitment to quality 

How to Choose the Right Proficiency Testing Scheme

There are many factors to take into consideration when choosing your PT scheme. Ensure that the scheme is thoroughly inspected and accredited according to international best practice standards. Other key elements to consider include the following:

Data Collection and Analysis

Think about whether the strategies provided by the PT provider are suitable for the needs of the laboratory. This can include:

• The number of scheme participants
• Methods and criteria used for performance assessment 
• Procedures for data collection from participants (e.g a web portal or email)
• Number of test items to be analysed
• Flexibility - the programme should be customised to suit each laboratory’s needs

A Reliable and Trustworthy Provider

You also need to ensure you have trust in your PT provider, and should consider the following:

• Experience - ensure the provider you choose has a good amount of experience and credentials
• Compliance with ISO 17043 accreditation
• Quality material - the samples should be blind in order to avoid bias 
• An independent advisory panel to ensure the scheme is conducted in a professional and fair manner 

Communication

Communication is another vital element to consider when choosing your PT provider, including: 

• Regular reports with a quick turnaround 
• Language used
• Level of support provided 
• Regularity of communication 

Proficiency Testing at UK NEQAS IIA

At UK NEQAS IIA, we provide our EQA services to clinical laboratories worldwide, with a focus on achieving increased confidence in patient test outcomes. We focus on maintaining and improving skills by utilising quality assurance to contribute to the well-being of patients. Register here with us today, and don’t hesitate to contact us for more information.