  In this paper, we propose a model of the dynamics of the blood glucose level
during an Oral Glucose Tolerance Test (OGTT). This dynamic includes the action
of insulin and glucagon in the glucose homeostasis process as the reaction of
an oral stimulus. We propose a Bayesian approach in the inference of five
parameters related to insulin secretion, glucagon secretion, gastrointestinal
emptying, and basal glucose level. Two insulin indicators related to the
glucose level in blood and in the gastrointestinal tract allow us to suggest a
classification for patients with impaired insulin sensitivity.
