A method of producing a solid coated carrier carrying an antibody, consisting of the steps of: (a) incubating a solid carrier with a solution comprising 0.1 to 10 % (w/w) or (v/v) of at least one suitable coupler, wherein the coupler is selected from diaminoalkanes, dicarboxylic acids or bi- or multi functionalized polyethyleneglycol, and subsequently removing the solution, thereby attaching a layer of the at least one suitable coupler to the carrier, and, optionally, further comprising a step (a') drying the carrier until the residual content of the solution is less than 10 % of the originally applied solution; (b) attaching the antibody to the layer of the at least one suitable coupler of step (a) attached to the carrier by incubating the carrier with a preferably buffered aqueous solution containing the antibody and subsequently removing the aqueous solution, further comprising a step (b') subsequent to the step (b) and previous to step (c): (b') incubating the carrier in a buffered aqueous solution containing a blocking agent and removing the aqueous solution; or optionally further comprising a step (b") subsequent to the step (b) and previous to step (c): (b") blocking unbound binding sites using an aqueous solution containing 0.5-10 % (w/w) substances selected from the group consisting of (poly)peptides, hydroxyethylstarch, mannitol, sorbitol and polyethyleneglycol, milk, soya, wheat or egg derived protein and optionally performing one or more washing steps using an aqueous solution after blocking; (c) incubating the carrier in an aqueous solution comprising one or more substances selected from polypeptides, at least one amino acid selected from the group consisting of glycine, aspartic acid, glutamic acid, proline, arginine, alanine, asparagine, glutamine, ornithine, hydroxyproline, citrulline, inuline, lysine, leucine, isoleucine, serine, valine, threonine, mannitol, or starch or a mixture thereof, such that the antibody is partially or completely covered by said one or more substances; and, optionally, air-drying the carrier until the residual water content is < 20 % (w/w); wherein steps (a), (b) and (c) are carried out in the above described order; and (d) sterilizing the produced solid coated carrier. (a) incubating a solid carrier with a solution comprising 0.1 to 10 % (w/w) or (v/v) of at least one suitable coupler, wherein the coupler is selected from diaminoalkanes, dicarboxylic acids or bi- or multi functionalized polyethyleneglycol, and subsequently removing the solution, thereby attaching a layer of the at least one suitable coupler to the carrier, and, optionally, further comprising a step (a') drying the carrier until the residual content of the solution is less than 10 % of the originally applied solution; (b) attaching the antibody to the layer of the at least one suitable coupler of step (a) attached to the carrier by incubating the carrier with a preferably buffered aqueous solution containing the antibody and subsequently removing the aqueous solution, further comprising a step (b') subsequent to the step (b) and previous to step (c): (b') incubating the carrier in a buffered aqueous solution containing a blocking agent and removing the aqueous solution; or optionally further comprising a step (b") subsequent to the step (b) and previous to step (c): (b") blocking unbound binding sites using an aqueous solution containing 0.5-10 % (w/w) substances selected from the group consisting of (poly)peptides, hydroxyethylstarch, mannitol, sorbitol and polyethyleneglycol, milk, soya, wheat or egg derived protein and optionally performing one or more washing steps using an aqueous solution after blocking; (c) incubating the carrier in an aqueous solution comprising one or more substances selected from polypeptides, at least one amino acid selected from the group consisting of glycine, aspartic acid, glutamic acid, proline, arginine, alanine, asparagine, glutamine, ornithine, hydroxyproline, citrulline, inuline, lysine, leucine, isoleucine, serine, valine, threonine, mannitol, or starch or a mixture thereof, such that the antibody is partially or completely covered by said one or more substances; and, optionally, air-drying the carrier until the residual water content is < 20 % (w/w); wherein steps (a), (b) and (c) are carried out in the above described order; and (d) sterilizing the produced solid coated carrier.