Company Profile About us Diametra is a leading provider of immunodiagnostic reagents and test kits to the clinical laboratory marketplace. Since its foundation in 1996, the Company has sought to provide unique and innovative products coupled with the highest level of customer service and support. Our track record of delivering innovative new products has given Diametra the broadest range of steroid test available anywhere in the world and unique autoimmune test kits, Tumor Markers, Diabetes and Vitamin D.