Antibody diluent composition, antibody diluent and preparation method of antibody diluent

The invention firstly provides an antibody diluent composition. The antibody diluent composition is prepared from the components of polyvinyl pyrrolidone and magnesium adenosine triphosphate. Secondly, the invention provides an antibody diluent and a preparation method thereof. The antibody diluent is prepared from the components in parts by weight: 0.1-0.2 part of sodium dihydrogen phosphate, 3-3.2 parts of sodium hydrogen phosphate, 8.9-9.1 parts of sodium chloride, 9.5-10.5 parts of bovine serium albumin, 0.8-1.2 parts of Proclin 300, 0.9-1.1 parts of the Polyvinyl pyrrolidone, 0.4-0.6 partof the magnesium adenosine triphosphate, and 950-1050 parts of deionized water. According to the technical scheme, the polyvinyl pyrrolidone and the magnesium adenosine triphosphate are adopted as the components of the antibody diluent; and after the antibody diluent contains the combination of the polyvinyl pyrrolidone and the magnesium adenosine triphosphate, the non-specificity background staining of a polyclonal anti