The present invention relates to a purified recombinant blood coagulation factor IX (rFIX) preparation, wherein at least 25% of the rFIX in the preparation is fully phosphorylated and sulfated, a cell culture expressing a rFIX resulting in said preparation, a pharmaceutical composition for treating a bleeding disorder comprising said preparation, and a method for treating a bleeding disorder comprising the step of administering said preparation to a patient in need thereof.