Short- and medium-term reproducibility of gastric emptying of a solid meal determined by a low dose of 13C-octanoic acid and nondispersive isotope-selective infrared spectrometry

Figure 2 Individual curves reflecting the increment in 13CO2 enrichment in exhaled air after intake of a 378 kcal solid meal containing 75 mL (68 mg) 13C-octanoic acid (the 36 curves were obtained in 12 healthy subjects at three separate days).