The CFSRE is developing quarterly trend reports associated with NPS in the United States. These trend reports are intended to provide near real-time information regarding NPS prevalence, positivity, and turnover. Testing was performed using biological fluids, sample extracts, and/or datafiles. The CFSRE received funding from the National Institute of Justice (NIJ) of the Department of Justice (DOJ) to develop this initiative. For more information regarding our trend reports, please contact us at firstname.lastname@example.org.