Platelet-Rich Plasma

To prepare PRP, blood is collected and centrifuged so its components separate according to density. A selected plasma fraction is then used. Preparation systems differ in platelet concentration, white-cell content, red-cell contamination, activation method, and final volume. The phrase PRP therefore covers a range of products rather than one standardized composition.

Platelets are cell fragments best known for clotting, and they also contain signalling proteins released after activation. That biological role explains clinical interest, but it does not establish the effect of every preparation for every condition. The body site, indication, technique, patient factors, and product characteristics all influence how evidence and risks are considered.

PRP is distinct from platelet-rich fibrin, although both begin with autologous blood. The processing method and resulting matrix differ. Because terminology is sometimes used loosely, a useful clinical discussion identifies the exact preparation and purpose. This entry is definitional and does not promise an outcome or indicate that PRP is appropriate for a specific concern.

Because PRP begins with the recipient's own blood, it is described as autologous. That reduces some donor-related issues but does not make every preparation identical or risk-free. Platelet count before processing, collection technique, anticoagulant choice, and the fraction selected after centrifugation all contribute to the final product's characteristics.

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