This paper presents the results of research of crystallization processes in solutions simulating the composition of human blood plasma. The synthesis of human plasma prototypes supersaturation depending on the experiment and the time and found that the obtained solid phase composed of octacalcium phosphate, karbonatgidroksiapatita B-type whitlockite. The effect of additives (magnesium ions, alanine and glycine) for the crystallization of calcium phosphates. It was found that the presence of additives in the model solution reduces crystallite size and the proportion in the solid phase karbonatgidroksiapatita. Studied the bioactivity of the samples and established the kinetic characteristics. As a result of thermal treatment of solids in the temperature range 200-800 ° C the basic phase transitions.