Figure 2

Excretion kinetics study of oxygen-18 isotopes in exhaled breath CO2 (expressed as δDOB18O) for type 2 diabetes (T2D) and type 1 diabetes (T1D).
(a) Breath δDOB18O(‰) values are clearly distinguishable from 60 min to 120 min after glucose load in NDC, T2D and T1D. (b) δDOB18O‰ for T1D (−4.4 ± 0.7) as compared with T2D (5.54 ± 0.2) and NDC (−2.9 ± 0.3). *p < 0.01. Values are means ± SEM.