Collaborative Testing Services, Inc. 
P.O. Box 650820, Sterling, VA, USA 20165-0820 1-571-434-1925
CTS offers drug analysis proficiency tests that provide hundreds of laboratories around the world with a key tool to be certain they are operating effectively. To make the tests as challenging as possible, a diverse range of controlled (U.S. Schedule 5 to Schedule 1) and non-controlled samples are used. The tests demand accuracy on the part of your analysts, as each involves the qualitative analysis of two samples and one, both or none could be a controlled substance. CTS also offers two tests specifically designed to focus on your laboratory's abilities to determine the quantitative purity of a known drug sample. An additional test focuses on the qualitative analysis of botanical samples for marihuana, with the choice to perform quantitative analysis of THC where applicable. These tests will help prove the competency of your analysts and increase confidence in your laboratorys results.
| 5001 Drug Analysis | ships | March |
| 5051 Quantitative Drug Analysis (Methamphetamine) | ships | May |
| 5031 Marihuana Identification & THC Quantitation | ships | June |
| 5041 Synthetic Drug Analysis | ships | July |
| 5002 Drug Analysis | ships | September |
| 5061 Quantitative Drug Analysis (Cocaine HCl) | ships | October |
2019
19-502 Drug Analysis
2019
19-501 Drug Analysis
2018
18-502 Drug Analysis
2018
18-501 Drug Analysis
2017
17-502 Drug Analysis
2017
17-501 Drug Analysis
2016
16-502 Drug Analysis
2016
16-501 Drug Analysis
2015
15-502 Drug Analysis
2015
15-501 Drug Analysis
2014
14-502 Drug Analysis
2014
14-501 Drug Analysis
Manufacturer's Information reports for all Drug Analysis tests can be found on the CTS Customer Portal.
