Customers can communicate with CTS staff via telephone or e-mail on an unlimited number of topics from queries about current tests to the future of forensics testing. The availability and responsiveness of its staff sets CTS apart from every other provider.


CTS is the first, the largest and the most imitated forensics proficiency test provider. Our tests are the benchmark for the industry.


From Late Order Purchase tests (at no additional cost) to multiple choices in test format/delivery to the greatest diversity and frequency of Forensic Biology/DNA tests, CTS has the tests you want when you need them.


Our focus on interlaboratory tests is exclusive; meeting your proficiency testing needs is our only concern. To that end, our Individual Reports are clear and concise, allowing you to quickly review and interpret results.


Our Research Tests, which are offered on a one-time, limited enrollment basis, are designed to either push the edge of science in existing tests or venture into new testing areas/disciplines. Forensic Science is not static, and our growing catalogue of tests reflects that fact.


Active participation in associations and industry groups, attendance at conferences and service on industry and government panels means that CTS tests are relevant to the community and reflect the input of all stakeholders. We also appreciate the opportunity to work with our customers in fulfilling their quality assurance objectives. Your opinions, comments and input matter to us and are vital to ensuring that tests remain meaningful and case-like.


The most comprehensive online client portal of any provider and numerous tests available completely via digital download are just two of the ways that CTS improves the testing experience.

CTS has been accredited by ANSI-ASQ National Accreditation Board / ANAB to ISO/IEC 17043:2010, "Conformity Assessment - General Requirements for Proficiency Testing" since 2014. This is the international guideline for proficiency testing providers.