Diagnostic anSERS Inc. is dedicated to producing affordable, ink-jet-printed SERS substrates, which served as sensors to measure trace amounts of chemicals, such as pesticides or narcotics. However, the sheer cost of the non-reusable SERS sensors, which are frequently manufactured in clean rooms, drastically limit their use. Through a patented ink-jet printing process, Diagnostic anSERS’ P-SERS™ sensors are produced at a fraction of the cost without sacrificing sensitivity. In addition to being used as a “traditional” SERS substrate (pipetted on sample), the wicking and flexible nature of P-SERSTM sensors enabled their use as swabs and or dipsticks, and when combined with portable Raman spectrometers, can be performed out of a lab and in the field.