PRP (Platelet-Rich Plasma) tubes are specialized sterile vacuum blood collection tubes designed for the safe and efficient preparation of autologous platelet concentrates. Their internal structure is key to their function; they contain a separating gel and anticoagulants. After drawing blood from the patient, the tube is centrifuged. During this process, the gel migrates to form a stable shield between the erythrocytes (red blood cells) and the platelet-rich plasma, based on density gradient separation.

This innovative design allows for the precise isolation of a high concentration of platelets and growth factors from the patient's own blood in a closed, single-use system, minimizing contamination risks. The prepared PRP is then extracted and used therapeutically in various medical fields, including orthopedics, sports medicine, and aesthetic medicine, to promote and accelerate the healing of injured tissues.