LDN was founded in 1996 in Nordhorn, Germany, with the aim to develop, manufacture and supply specialty in-vitro diagnostics test systems and innovative technologies to the clinical and research laboratory markets. From the beginning the determination of biogenic amines with immunological test systems was in the core of our business – where they are nowadays the world wide market leader. Integral part of this success are e.g. their assays for the quantitative determination of free metanephrines in plasma, the catecholamines, histamine and serotonin.This positive outcome encouraged us to expand our business to related diagnostic areas such as food safety (HistaSure™ Fish ^{Rapid Test}), food intolerance, neurotransmitters and amino acids. Next, LDN introduced a comprehensive endocrinological panel, especially also for niche parameters e.g. free testosterone, 17-OH-progesterone, chromogranin A, DHT, estrone. They continue to innovate on a consistent base, developing on average 5-7 new products a year.