Provided are systems comprising delivery vehicles for the stable storage of immobilized proteins, e.g., protein therapeutics, in a form amenable to administration, such as by injection or infusion, in combination with an elution fluid. Also provided are proteins adsorbed to chromatography media in a form compatible with a one-step administration of the protein. Exemplary delivery vehicles are pre-filled syringes and pre-filled infusion modules； exemplary proteins are antibodies useful in therapy. Also provided are methods of producing the immobilized proteins and methods of using the immobilized proteins, e.g., protein therapeutics.
