Part of OriGene Technologies, Inc., DRG Instruments Gesellschaft mit beschränkter Haftung is a company headquartered in Marburg, Germany, that develops and manufactures medical enzymes. It was founded in 1973. Wilhelm Sänger is currently the CEO of the firm.\nThe company says this about itself: DRG Instruments GmbH, founded in 1973, is located in Marburg and specializes in the development and production of innovative ELISAS and Chemiluminescent assays, both for routine and research applications, in the fields of diabetes diagnosis, endocrinology, prenatal/neonatal supervision, thyroid function and many more. Recently, DRG developed the worlds first nonradioactive immunoassays for the determination of active Renin and PLGF as well as a complete panel of sensitive assays for the quantitative determination of saliva steroids. In the last five years, we have developed our own tumor marker panel and a broad range of ELISAs in the field of infectious diseases, including the worlds first assay for the qualitative detection of human Fasciola IgG. The DRG serum steroid ELISAS like 17-OH Progesterone, DHEA, Testosterone and other bestsellers, have held a leading position in the field of gynecologic endocrinology worldwide for many years. Our newest development is an ELISA for the determination of 25-OH Vitamin D Total, a sensitive assay, which correlates perfectly to established RIAs.