How do I set up an account with CTS?

Just give us a quick call or fill out our contact form. One of our representatives will be happy to help you set up an account. If you’re looking for services within the greater Phoenix area, please give us a call and we’ll be able to answer any questions you may have.


How do instant drug testing devices work and what are cutoff levels?

Instant drug testing devices are designed to detect the presence of metabolites formed following consumption of certain substances. Cut-off level is the minimum amount of the substance needed in order for a screening device to show a presumptive positive result. For example, a cut-off level of 300 ng/mL means that 300 nanograms of the metabolite must be present within 1 milliliter of the sample in order to be detected.


Do you have customer service?

Of course! Our friendly and knowledgeable customer services reps are available to answer your questions Monday through Friday from 8 a.m. to 4:00 p.m. (AZ Time)