What are the opening hours?

Monday 8am - 4:30pm Tuesday 8am - 4:30pm Wednesday 8am - 4:30pm Thursday 8am - 4:30pm Friday 8am - 4:30pm

Collaborative Testing Services - CTS

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United States
Sterling, VA
Collaborative Testing Services - CTS

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

05/26/2026

Our technical staff is having a great time at the Association of Firearm and Tool Mark Examiners' Annual Training Seminar—if you're in Baltimore, come visit us at booth 14!

03/16/2026

New tests in both our forensics and rubber programs are now available for enrollment on our website!

Our SNP Analysis series is designed to provide an objective measure of your laboratory's SNP genotyping. Test 5911/2 for the spring 2026 cycle of testing is open for enrollment until April 10th, and Test 5915/6 for the fall 2026 cycle of testing is open for enrollment until June 15th.

Rubber Test 636: Tear Strength, developed to meet a growing need for ASTM D624 testing, is available for half-year 2026 enrollment until June 10th.

03/12/2026

One month until our team heads to in Nashville, TN!

Stop by booth 29 to learn more about our interlaboratory proficiency testing programs designed to help organizations demonstrate measurement competence, meet accreditation requirements, and ensure reliable testing performance.

At Collaborative Testing Services, Inc. (CTS), we offer the world’s largest variety of interlaboratory tests across industries including agriculture, containerboard, forensics, metals, plastics, rubber, and wine. With worldwide clients in both the public and private sectors, we aim to create and administer sustainable and meaningful testing schemes that help laboratories maintain compliance, monitor performance, identify issues early, and strengthen staff training with unbiased, actionable data.

Learn more on our website—see you in April!

12/01/2025

As we continue preparation for the 2026 test year at CTS, we are excited to announce the launch of a new On-Demand test series for Body Fluid Identification!

This test series, with order fulfillment beginning in February 2026, is especially suitable for organizations with larger serology or crime scene units and offers all the conveniences of our current On-Demand testing, including flexible purchasing, choices between neat and casework-style samples, and immediate report generation.

For more information, visit our website!

Address

21331 Gentry Drive
Sterling, VA
20166

Opening Hours

Monday	8am - 4:30pm
Tuesday	8am - 4:30pm
Wednesday	8am - 4:30pm
Thursday	8am - 4:30pm
Friday	8am - 4:30pm

Website

http://www.collaborative-testing.com/

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