According to the “Guideline for the Definition of ‘GMO-free Food Production’ and its Labelling”, monitoring bodies have to be accredited to this guideline resp. according to EN 45011 (see section 6.3. of the guideline).
The accreditation of monitoring bodies is conducted by the accreditation body of the Federal Ministry of Science, Research and Economy (BMWFW):
Ing. Kurt Danzinger
BMWFW (Austrian Federal Ministry of Science, Research and Economy)
Basis for the accreditation is the “Guideline on Risk-Based Monitoring of Freedom from GMO”, developed by the BMWFW (Austrian Federal Ministry of Science, Research and Economy).