The method of blood type testing is relatively simple, first of all, you need to prepare the ABO blood grouping kit, open the outer packaging can see a rectangular body, in the two ports marked with A, the other end marked with B. AB in the middle of the three holes in turn, disinfect the fingertips with alcohol cotton balls after using a sterile needle, and then use a suction tube to draw about three drops of blood, in the two holes near the A and B in turn, about 1.5 drops of blood The two holes are completely red, and then the ABO blood group standard diluent is dropped into the middle hole. The result can be read in about 5 minutes. If only the A end of the test strip is red, the blood type is A. If only the B end is red, the blood type is B. If both ends are red, the blood type is AB. If both ends are not red, the blood type is O.