Profile: BioAssay Works, LLC researches, develops, markets & sells colloidal gold (nanoparticle gold) products & related immunodetection products and services. We focus on antibody based & antigen based detection technologies, and on their application in lateral-flow immunoassay for both instrumented & visually read tests. Our services include contract assay development, contract manufacturing, antibody development, lateral-flow component optimization, and reagent supply. Our custom conjugation services include conjugating soluble proteins, haptens, hydrophobic proteins, and viral & bacterial proteins, and concentrated gold sol for assay research. Our unique concentrated gold sol, assay optimization, and C-FLAT® assay platform produce ultra-sensitive assays. Our lateral-flow immunodiagnostic device incorporates unique gold sol production, conjugation expertise, and impregnated ribbon technology into the counter-flow lateral platform. Optimized components contribute to ultra-sensitive lateral-flow assays. The combination of optimized nanoparticles of consistent size & shape, our unique conjugation process that eliminates free antibody, outstanding conjugate stability, C-FLAT® lateral-flow platform technology, and rapid-assay experience results in increased ELISA-like detection sensitivity in contrast to traditional gold-sol technology.