Monitoring Exhaled Breath to Noninvasively Detect Glycemic Events

Inclusion Criteria: * Who are diagnosed with type 1 diabetes. * Who are between 12-19 years of age. * That utilize a Dexcom (G6 or G7) continuous glucose monitoring device. * That have an established working CGM for at least 12 hours (that does not need to be replaced within 24 hours). * That are willing to share their daily CGM data for the study. * That are the only individuals in their household with any type of diabetes diagnosis (type 1 or type 2). * That are willing to return the device within 24-48 hours of study completion. * That are located in Indianapolis, IN or its suburban areas. Exclusion Criteria: * That are smokers or use tobacco products or who live with someone who smokes in their vicinity. * That have a condition or abnormality other than type 1 diabetes that in the opinion of the Investigator would compromise the safety of the subject or the quality of the data. * That utilize closed-loop diabetes management systems. * That have symptoms or recently been diagnosed with an upper respiratory illness including COVID-19. * That themselves or a close family member (living within the same household at the time of the data collection period) is on a "ketogenic diet". * That themselves or a close family member is working in an industry with high and continuous exposure to exogenous VOCs. Examples of such industries include beauty salons and paint manufacturers. * That are unable or unwilling to cooperate with sample collection.