Fecha de publicación: -- Fuente: WIPO "tomato" The present invention provides a preparation method of a sample for proteome analysis, which enables efficient recovery of trace proteins in a biological sample while removing, as much as possible, highly abundant proteins that hinder deep analysis in the proteome analysis. In the preparation method for a sample for proteome analysis of the present invention, glycoproteins having binding affinity to a lectin selected from the group consisting of N-acetylglucosamine oligomer-binding lectins and fucose-binding lectins in a biological sample are recovered by contacting the biological sample with a carrier on which said lectin or a binding fragment thereof is immobilized. In one embodiment, the biological sample is contacted with a carrier on which a combination comprising Solanum tuberosum lectin or a binding fragment thereof and Lycopersicon esculentum lectin or a binding fragment thereof is immobilized.