HiMedia is delivering a range of chemicals and reagents for use in the development of diagnostic lateral flow immunoassays. These chemicals and reagents have been tested for their physical, chemical and functional characteristics to improve the reliability of results. Gold(III) chloride trihydrate serves as the primary source of gold ions for the production of colloidal suspensions. This Gold Precursor is used in the Chemical Reduction Method for Nanoparticle Synthesis to support Immunodiagnostic Sensor Development and lateral flow assays.