IMPROVACUTER® Gel & EDTA.K2 tube is a kind of EDTA.K2 tube for a special use: the preparation of undiluted plasma specimen instead of whole blood specimen. There are 2 kinds of additives inside: inert separation gel at the bottom of the tube and EDTA.K2 sprayed in the interior surface above gel. Through centrifugation, the separation gel can form a barrier between plasma and blood cell and totally separate them, while keeping the original characters of plasma. It provides a safe, convenient and standard solution for the treatment, transport and storage of undiluted plasma specimen, especially for the test of undiluted plasma in molecular diagnostics and viral load detection.