High Performance ELISA kits for measurement of human GM-CSF, IFNa, IFNg, IL-1a, IL-1b, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-12 p70, MCP-1, sAPO-1/Fas, sCD40, sCD40 Ligand, sFas Ligand, sICAM-1, sICAM-3, sIL-2R, sIL-6R, sTNF-R (60kD), sTNF-R (80kD), sVCAM-1, TNFa, TNFb, VEGF-A, VEGF-C in plasma, serum and other biological fluids.