Affinity Biologicals Inc. may be best known for affinity-purified antibodies and ELISA kits, but a significant portion of our manufacturing activity is the production of disease-state plasmas and controls.  We have expanded our plasma manufacturing capacity to include lyophilized Proficiency Testing (PT) materials.  As a major supplier of bulk intermediates for use in diagnostics manufacturing, and working relationships with proficiency testing organizations, we have focused our manufacturing to customize plasmas to your survey specifications.