Embodiments of the invention are directed to methods of treating a wound by administering a wound-healing composition and the wound-healing composition. The wound-healing composition has a purified platelet-removed platelet-rich plasma and a wound-healing component. The wound-healing component is a protein, a peptide, or combinations thereof. The methods of treatment utilize an amount of the wound-healing composition sufficient to treat a patient with a wound, which may occur by promoting an activity of cell migration, cell proliferation, and/or angiogenesis. Also disclosed are processes for preparing the wound-healing composition.
