1. Figure 2 13C-octanoic acid gastric emptying breath test
Figure 2 | 13C-octanoic acid gastric emptying breath test. The test principle underlying the 13C-octanoic acid breath test (part a) is as follows: 13C-octaonoic acid is rapidly absorbed after gastric emptying and transported to the liver. Hepatic metabolism leads to production and exhalation of 13CO2. Thus, alterations of the 13C:12C ratio in breath samples collected at multiple time points postprandially reflect gastric emptying. Examples (part b) of values for accelerated, normal and delayed gastric emptying are shown. Normal data (mean ± s.e.m.) are derived from 20 healthy individuals6.
Keller, J. et al. (2018) Advances in the diagnosis and classification of gastric and intestinal motility disorders
Nat. Rev. Gastroenterol. Hepatol. doi: /nrgastro