Blood platelet lysate and method of producing the same

A method of preparing a blood platelet lysate starting from platelet-rich plasma from whole blood of animals, to which whole blood a citrate has been added to prevent coagulation,

• comprising:
• a) concentrating the platelet-rich plasma by ultra-filtration to obtain a concentrated platelet-rich plasma,
• b) adding water to the concentrated platelet-rich plasma for lysis of the platelets included,
• c) adding Ca2+ to the lysed concentrated platelet-rich plasma for forming coagel from other components than lysed platelets, the concentrated platelet-rich plasma, after addition of Ca2+, being allowed to stand at 37° C. maximum, for 3-8 h,
• d) centrifuging the coagel, whereby a blood platelet lysate is obtained, which substantially consists of lysed platelets, and a coagulate, and
• e) after centrifugation, the blood platelet lysate going through a filtering step.