Patent ID: 11933731
Assignee: HOUND LABS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A system using Surface-Enhanced Raman Spectroscopy (SERS) for detection of tetrahydrocannabinol (THC) in a breath sample, the system comprising:
an excitation laser configured to excite a SERS-active substrate, wherein the SERS-active substrate comprises one or more capture sites for the breath sample;
a high sensitivity spectrometer configured to collect one or more Raman signals from the one or more capture sites;
a detector electrically connected to the high sensitivity spectrometer; and
wherein the one or more Raman signals are directly proportional to a threshold level of THC captured in the breath sample, wherein the threshold level of THC is correlated with an average amount of THC in breath between 2 and 3 hours after inhalation.