Since 1971

Your Trusted Partner In Proficiency Testing

Serving your evolving quality assurance needs with innovative forensic and industry interlaboratory proficiency testing. Proudly 100% employee-owned.

Logo of CTS with a green oval and the text 'CTS' in white, and the words 'Worldwide Interlaboratory Testing' to the right.

Industry Proficiency Testing

since 1971

The marketplace is global. Your interlaboratory test provider should be, too.

Quality buzzwords come and go, but our 50+ year commitment to assisting laboratories in meeting their quality assurance objectives remains. Find out how our industry proficiency testing programs can help you achieve better measurements, better control, and better laboratory performance.

Logo of CTS Forensics Proficiency Testing with a blue oval and lines radiating outward.

Forensics Proficiency Testing

Since 1978

Innovative testing, designed by and for the communities we serve.

As the first—and still largest—forensic proficiency test provider, we continue to set the benchmark for case-like, relevant testing. Discover why organizations around the world turn to us each year to meet their proficiency testing needs.

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