||High-quality prpmed PRP tubes with separating gel and anticoagulant PRP tubes: Red with citrate and separating gel for approx. 3-4 ml for convenient and fast plasma production. PRP tubes are made of high quality borosilicate glass. Anticoagulant (citrate) and separation gel are already included. Blood collection is done by vacuum method to make blood collection safer and easier. Instructions are included. As a concentrated source of autologous platelets, PRP contains (and releases through degranulation) several different growth factors and other cytokines that stimulate bone and soft tissue healing.