Thank you for taking the time to write, and for the tips and thoughts. Not sure whether I can order the hair analysis from my country, but will look into it. Had one done in Sydney (Australia) a few years ago, which came back all fine.
The local hospital's tests for elastase came back normal (actually in a 'possible problem' range, however the gastrologist says there is no reason to suspect pancreatic problem. Unfortunately he now disregards the rest of the Metametrix test results, as well. (Does anyone know whether any public institutions/hospitals use Metametrix anywhere in the world?).