Home / Documents Proficiency Test Documents Standard PT ISTA Standard Proficiency Test (PDF,650.8 kB) ISTA Standard Proficiency Test Programme Plan 2023 - 2025 (PDF,284.1 kB) ISTA Crop Groups (PDF,124.1 kB) Activity Report of the Proficiency Test Committee 2003/2004 (PDF,212.7 kB) GMO PT Real-time PCR Quantitative Results of ISTA GMO Proficiency Tests: Standards and Units (PDF,31.8 kB) 2009 Survey on the proposed use of devitalized seed in ISTA GMO Proficiency Test Programme (PDF,180.5 kB) Seed Health PT Organizing and Analyzing Results of the Seed Health Proficiency Tests (PDF,843.8 kB)