DIAsource ImmunoAssays (formerly BioSource) is an international diagnostics company situated in Belgium. We develop, manufacture and market clinical diagnostic products in the field of endocrinology and infectious diseases. DIAsource ImmunoAssays is the new name of BioSource Europe S.A. This change of company name is a direct consequence of the Management Buy-Out (MBO)that was realized early in 2007 by the management and private investors. With this MBO BioSource Europe was separated from the former owner Invitrogen (now Life Technologies).