[Preparation of an erythrocytic diagnostic agent based on staphylococcal proteinase].

Various methods for sheep red cell sensitization for the preparation of erythrocytic diagnostic agent from staphylococcal proteinase were under study. Sensitization with chromium chloride yielded the best results as regarded the sensitivity of the agent, optimal sensitizing dose, and sensitin consumption. The resultant erythrocytic diagnostic agent retained about 10% of the initial enzymic solution activity. The authors have demonstrated a high specificity of the erythrocytic diagnostic agent from staphylococcal proteinase, that may be used for the serologic diagnosis of staphylococcal infection and for proteinase indication in various staphylococcal preparations.