This is a 2024 test that is part of the CTS Late Order Purchase (LOP) plan. Credit card purchase only. Participants evaluate THC/THC metabolites in human blood with case-like concentrations. Samples ship in September. Review test info for special instructions for non-U.S. laboratories.

This is a 2024 test that is part of the CTS Late Order Purchase (LOP) plan. Credit card purchase only. Participants analyze known saliva samples for DNA. Samples are provided on a choice of FTA™ Indicating Micro Cards, Bode Buccal® DNA Collectors, or Swabs. Samples ship in July. (STR/YSTR)

Participants analyze samples for the presence/identity of controlled substances. Available to U.S. laboratories with a DEA registration number and international laboratories pending appropriate documentation. Samples ship in March.

Participants analyze samples for the presence/identity of controlled substances. Test items are completely randomized and available for purchase on-demand. Available to U.S. laboratories with a DEA registration number only.

Participants analyze samples for the presence/identity of controlled synthetic drug substances. Available to U.S. laboratories with a DEA registration number and international laboratories pending appropriate documentation. Samples ship in July.

Participants compare questioned latent prints to known inked prints to establish identification. Test material is available in two formats (photo or digital download). Samples ship in January.