Liquid-stable protein multi-control containing: Albumin, α-1 Acid glycoprotein, α-1-Antitrypsin, α-2-Macroglobulin, Antistreptolysin O, Antithrombin III, β-2-Microglobulin, C3c, C4, Ceruloplasmin, CRP, Ferritin, Haptoglobin, IgA, IgE, IgG, IgM, Kappa light chains, Lambda light chains, Myoglobin, Prealbumin, Retinol binding protein, RF, Transferrin