1. Home
  2. Laboratory Improvement
  3. Proficiency Testing

Proficiency Testing

From routine to esoteric, our programs help you deliver performance you can measure and accuracy you can trust.

New Programs Revealed

Maximize confidence in your test results with our new scientifically developed programs.


For Domestic and international PT customers: Refer to the CAP’s COVID-19 Information page for updates.

Proficiency Testing (PT) Programs


Laboratory medicine is changing at a rapid pace. Our comprehensive range of programs constantly evolve to keep you in step with these changes so you have more time for what matters most—accuracy in the laboratory.

ISO 17043 Accreditation for Proficiency Testing

The CAP is committed to providing the highest quality proficiency testing (PT) materials. Review our quality policy, scope, and certificate of ISO accreditation.

Learn more about ISO accreditation.

External Quality Assessment (EQA) for Laboratories Outside the USA

Join more than 20,000 laboratories around the world and partner with us on your journey to achieve continuous quality improvements and higher standards of care for patients.

Start your journey


e-LAB Solutions Suite (ELSS)

Learn how ELSS, our portal to manage your laboratory improvement and other tools integrate with our PT programs.

Direct Transmission of PT Results

Electronically transmit your quantitative PT results directly to us without manual entry.

Learn more

Sample Exchange Registry

Our Sample Exchange Registry connects laboratories performing testing where no formal PT is available.

Learn more

Anatomic Pathology Slide and Tissue Sample Donation Programs

Participate in programs that elevate the skills of pathologists and technologists.

Access Donation and Submission Forms

News and Updates

Regulatory Information

Stay informed and up-to-date with regulatory news as well as timely information about our PT programs.

Learn more


eAlerts provide need-to-know information about our laboratory improvement programs.

Learn more