Method for rapidly separating supernatant from human whole blood or suspended red blood cells by utilizing lyophilized preparation

The invention relates to a method for rapidly separating supernatant from human whole blood or suspended red blood cells by utilizing lyophilized preparation. The method comprises the following steps: the phytoagglutinin or the anti erythrocyte antibody is pre-coated on a magnetic polymer microsphere to be prepared into isolating reagent for the liquid whole blood or suspended red blood cells; the isolating reagent for the liquid whole blood or suspended red blood cells is absorbed by insoluble polymer, and after lyophylization, the isolating reagent is cut into thin slices to be prepared into isolating reagent for lyophilized whole blood or suspended red blood cells; and the isolating reagent for the lyophilized whole blood or suspended red blood cells is added to the human whole blood or suspended red blood cells to be uniformly mixed and then placed above a magnetic body, and the supernatant is rapidly separated. The lyophilized preparation preserved for long term at the normal temperature can be prepared by the method, and the supernatant can be rapidly separated form the human whole blood or suspended red blood cells under the conditions without ensuing the electric power and the centrifugal machine.