The AAFCO Collaborative Check Sample Program consists of twelve specially ground and mixed commercial feed samples.  The series – which begins in January of each year – includes a variety of feeds and supplements with nutrients, drugs, antibiotics, minerals, and vitamins at levels typically encountered in commercial products. Samples are shipped to participants each month of the year and are tested for analytes of interest by each lab.  Results for individual analytes are reported using specified AAFCO method codes and units to allow for analysis of the performance of individual methods or method types.  Reported results are analyzed statistically and participants are provided with performance scores for each analyte and method reported.  Results are used by industry and regulatory laboratories as part of their quality control/quality assurance programs.

Laboratory data are reported using the AAFCO Check Sample Program Data Reporting Website.  Prepared report cards and method performance reports of the consensus summary data are available for download from the AAFCO Check Sample Program Data Reporting Website.

See the Invoice Form (available below) for current pricing. The AAFCO Assistant Secretary-Treasurer will enter your subscription upon payment and will assign a confidential laboratory number.

Inquiries concerning the CHECK SAMPLE PROGRAM should be sent to: