The present invention provides a novel aptamer for IgG and a method for
utilizing the same and the like. More specifically, the present invention
provides an aptamer that binds to an Fc region of IgG (e.g., human IgG);
a complex comprising an aptamer and a functional substance bound thereto
(e.g., affinity substance, labeling substance, enzyme, drug, toxin, drug
delivery vehicle); a solid phase carrier with an aptamer or complex
immobilized thereon; medical equipment comprising a solid phase carrier;
a method for antibody purification comprising adsorbing an IgG antibody
to a solid phase carrier, and eluting the adsorbed IgG antibody with an
eluent; a method for producing a purified antibody, comprising preparing
an IgG antibody and purifying the prepared IgG antibody with a solid
phase carrier and the like.