The invention relates to a method for producing injectable pharmaceuticalformulations ofblood-derived protein materials, including the steps of fractioning the sourcematerial in apolymer/salt aqueous two-phase system in the presence of phenol, purifying thetopphase of the system by means of precipitation with caprylic acid and purifyingthe bottomphase by means of thermocoagulation, increasing the purity of the materials inbothphases through chromatography, removing viral particles by means of thenanofiltration ofboth preparations, and formulating, stabilizing, and packaging the resultingmaterials.
