Compositions and methods for preparing neutrophil-depleted platelet rich plasma are provided. Generally, these compositions comprise a higher concentration of platelets and depressed concentrations of neutrophils relative to whole blood although white blood cells may be at higher concentrations than whole blood. The concentrations of the platelets and/or the white blood cells may be two to eight times the respective concentrations in whole blood. These compositions may have depressed concentrations of red blood cells and hemoglobin. In some variations, the compositions may be useful to treat damaged connective tissue and/or to slow or stop cardiac apoptosis after a heart attack. The neutrophil-depleted platelet rich plasma composition may be delivered in conjunction with reperfusion therapy.
