Founded in 1971, Collaborative Testing Services (CTS) is a leading proficiency testing provider that serves the evolving quality assurance needs of several industries with innovative interlaboratory proficiency testing.

With worldwide clients in both the public and private sectors, we aim to create and administer sustainable and meaningful testing schemes in both our industry and forensic programs. 

We currently offer accredited industry proficiency testing for agriculture, color, containerboard, fasteners and metals, paper, plastics, rubber, and wine, and accredited forensics proficiency testing for drug analysis, forensic biology and DNA, firearms and toolmarks, latent prints and impressions, questioned documents, trace evidence, toxicology, crime scene analysis, digital and multimedia evidence, and forensic anthropology—all organized by our skilled, full-time technical staff.

In addition to our commitment to quality proficiency testing, we are dedicated to leadership in our industry. As a 100% employee-owned small business, we foster a growth-oriented culture where our staff are empowered by their colleagues and motivated by their direct contributions to our success.

CTS is ANAB-accredited to ISO/IEC 17043:2023.

Collaborative Testing Services (CTS)

This department coordinates and manages forensic programs and initiatives.

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