The antler blood slice is divided into first-class, second-class, third-class, broken blood slice four grades, antler powder slice is divided into special, first-class, second-class, third-class, fourth-class five grades. Its specifications are as follows: First grade blood tablets: whole blood honey wax tablets, skin egg tablets, can be slightly hidden blood, no obvious sand eyes, the surface of the tablets is fine and clean, the tablets are in good shape.　　Second-class blood slices: whole blood, slightly with trachoma, hidden blood, slightly rough surface, slice shape is poor.　　Third-grade blood tablets: more blood and less powder, with trachoma, rough surface and incorrect shape.　　Broken blood tablets: the fragments picked off from the first to third grade blood tablets, with good color and luster, but the tablets are not shaped.　　Extraordinary powder slice: more powder and less blood or slippery slice, bright color, thin and glutinous slice surface, slice shape is better.　　First-grade vermicelli: the flour is more sufficient, the surface is more glutinous, and the shape of the slices is more positive.　　Second-class vermicelli: poorer flour, slightly sandy, poorer slice shape.　　Third-grade vermicelli: the mesh on the surface is thicker, the outer ring of the flakes is slightly ossified, and the color and shape of the flakes are poor.　　Fourth-grade powder flakes: inferior color, coarse mesh, most of which are ossified. If the powder can only be sent to the drug test with thin-layer chromatography to identify the recommendation to buy blood tablets, the powder's chances of forgery is much greater