r2 Diagnostics, a sister company of Enzyme Research Laboratories (ERL), was incorporated in 1993 as an FDA 21CFR820 registere ... d and an ISO 13485 certified manufacturer and distributer of hemostasis products for the clinical coagulation laboratory. Among our reagents and controls we currently manufacture a low ISI, liquid thromboplastin (Phosphoplastin RL), a heparin and lupus sensitive APTT (Phospholin ES), a robust Protein S kit with 24 hour reconstituted stability (ThromboTek PSe), a kaolin activated KCT suitable for automated coagulometers (LupoTek KCT), venom based screen and confirm reagents for LA (LupoTek Detectin VL and LupoTek Correctin VL), and Thrombin Time (T-Tek) and Fibrinogen (Fibro Tek) kits built with Enzyme Research Laboratories' human thrombin. read more