Abstract: In this article the authors describe the application of Matrix Assisted Laser Desorption/Ionization Time-of-Flight (MALDITOF) Intact Cell Mass Spectrometry (ICMS) within a proficiency test organized by a European Union (EU)-funded project on the topic of Establishment of Quality Assurances for Detection of Highly Pathogenic Bacteria of Potential Bioterrorism Risk (EQADeBa). In total …