Figure 3. (A) Plot of peak oral VSC concentration measured by the sulfide detector vs. the GC-measured VSC concentration in oral gas obtained immediately before initiation of aspiration into the sulfide detector. Data represent triplicate measurements made in 18 individuals. The three determinations made for each individual are denoted by a common symbol. (B) Plot of plateau oral VSC concentration measured by the sulfide detector vs. the GC measurement of total VSC concentration in gas obtained during the plateau phase. Data represent triplicate measurements made in 18 individuals, and the three determinations made for each individual are denoted by a common symbol.