US 12,392,769 B1
Ambient contamination in breath analyte detection and measurement
Michael V. D'Ambrosio, Berkeley, CA (US); Daniel H. Friedman, Mountain View, CA (US); Jeffrey A. Stoll, San Mateo, CA (US); and Michael Scott Lynn, Piedmont, CA (US)
Assigned to Hound Labs, Inc., Oakland, CA (US)
Filed by Hound Labs, Inc., Oakland, CA (US)
Filed on Jan. 11, 2022, as Appl. No. 17/573,560.
Claims priority of provisional application 63/228,023, filed on Jul. 31, 2021.
Claims priority of provisional application 63/203,820, filed on Jul. 30, 2021.
Claims priority of provisional application 63/201,062, filed on Apr. 9, 2021.
Claims priority of provisional application 63/199,696, filed on Jan. 18, 2021.
Claims priority of provisional application 63/199,610, filed on Jan. 12, 2021.
Int. Cl. G01N 33/497 (2006.01); G01N 33/00 (2006.01)
CPC G01N 33/497 (2013.01) [G01N 33/0047 (2013.01); G01N 33/4975 (2024.05)] 29 Claims
OG exemplary drawing
 
1. A method for evaluating an analyte level in a breath sample, the method comprising:
determining an amount of an analyte captured from a breath sample obtained from a subject;
comparing the determined amount of the analyte captured from the breath sample to a background level for the analyte in an ambient air sample that is obtained at a location and at a time in which the breath sample is obtained from the subject; and
indicating whether or not the determined amount of the analyte captured from the breath sample exceeds the background level;
wherein the background level is correlated with a baseline maximum level of THC in the ambient air sample.