Spanclone Anti-D IgG+IgM Serum (10ml) Mono is an in vitro diagnostic reagent used for the determination of the D antigen (Rh factor) on human red blood cells, classifying blood as Rh positive or negative. It is a monoclonal antibody blend of both IgM and IgG classes, allowing it to detect both standard D antigen and weak D variants (Du), making it versatile for both slide and tube tests.