Founded in 1971, CTS has been providing proficiency tests for almost 50 years. The first and still the largest forensic proficiency test provider, CTS has set the benchmark for forensic tests since 1978. Our ever-growing catalogue of tests reflects the responsive and innovative nature of our organization, as well as our involvement in and dedication to the forensic community. Organizations around the world turn to CTS each year to meet their proficiency testing needs. Check out our more than 70 tests offered across 10 disciplines: Forensic Biology / DNA Drug Analysis Firearms & Toolmarks Latent Prints & Impressions Questioned Documents Trace Evidence Toxicology Crime Scene Digital & Multimedia Evidence Anthropology