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APTECA Proficiency Testing (PT) Program for Aflatoxin, Fumonisin & DON

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    • ISO/IEC 17025:2017 Chemical Testing
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OTSC Agricultural Analytical Service Accreditations


  • ISO/IEC 17025:2017 Chemical Testing
  • ISO 17034:2016 Reference Material Production
  • ISO/IEC 17043:2010 Proficiency Testing Provider

2024 Program

  • Changes to 2024 Progam


2024 Program Dates


Round 4 (Aflatoxin)
  • Samples mailed: November 15, 2024
  • Results Due: January 15, 2025
  • Reports Due: January 30, 2025

PT Participants

  • Setup your Account (First Time User)
  • Reset Password
  • Enter or Review Your Laboratory's Results
  • View Proficiency Testing Reports
  • Update Contact Information
  • PT Program Evaluation (Feedback)
  • Request PT Certificate



OTSC- Texas A&M AgriLife Research Aflatoxin Proficiency Testing and Control Program
Office of the Texas State Chemist • 445 Agronomy Road, College Station, TX 77843-2114
(979)845 1121 • Fax (979)845 1389
©2014-2020 Office of the Texas State Chemist • Last Updated: 12/07/2020