external quality assessment programs are accepted around the world as invaluable tools used by laboratories to assess the performance of their testing systems. results are objectively compared to other laboratories using the same methodologies, instruments and reagents. when used in conjunction with daily quality control, these external programs can give laboratories added confidence in their patient test results. bio-rad eqas offers several comprehensive programs for clinical chemistry, therapeutic drug monitoring, immunoassay, immunology, hemoglobin and tumor marker testing. please select from the products listed on the left side of this page for specific details of individual programs.