Gel & Clot Activator tube is used for serum biochemistry, drug detection and immunology, etc. Coagulant is finely coated on the inner wall of which can shorten the blood coagulation time. After centrifugation, the serum and blood cells are completely separated to obtain high-quality serum. The biochemical properties and chemical composition of the serum do not change significantly within 48 hours. Centrifugation time for 5 minutes, the recommended storage temperature is 4?C-25?C.