PRP (Platelet-Rich Plasma) tube is a specialized medical device used to collect and process blood for the purpose of isolating platelet-rich plasma. It is typically made of glass or medical-grade plastic and is pre-filled with an anticoagulant to prevent blood clotting during processing. The tube is designed for use with a centrifuge, allowing for the separation of blood components based on density. It usually features a secure cap, a clear body for visual inspection, and volume markings for accurate measurement.