Description_x000D_ General description_x000D_ cGMP Enzyme Immunoassay Kit is non-radioactive, competitive immunoassay for the quantitation of cyclic guanine monophosphate (cGMP) in biological fluids (serum, plasma, urine and saliva), tissue culture media samples or in samples containing very low concentrations of cyclic nucleotides. This kit uses a polyclonal antibody to cGMP to competitively bind cGMP or cGMP that has been covalently linked to an alkaline phosphatase molecule. The immunoassay is performed in a 96 well plate coated with anti-rabbit IgG antibody. The colored end product, produced by the addition of substrate to the wells, is read at 405 nm on a multiwell plate reader. The intensity of the color is inversely proportional to the concentration of cGMP present in the well._x000D_ Application_x000D_ Non-radioactive, competitive immunoassay for the quantitation of cGMP in biological fluids (serum, plasma, urine and saliva), tissue culture media samples, or in samples containing very low concentrations of cyclic nucleotides. This kit uses a polyclonal antibody to cGMP to competitively bind cGMP or cGMP that has been covalently linked to an alkaline phosphatase molecule. The assay is performed in a 96 well plate coated with anti-rabbit IgG antibody. The colored end product, produced by the additon of substrate to the wells, is read at 405 nm on a multiwell plate reader. The intensity of the color is inversely proportional to the concentration of cGMP present in the well._x000D_ cGMP Enzyme Immunoassay Kit has been used for the quantitative determination of cyclic guanine monophosphate (cGMP) concentration in parasite tissues and mouse aortic artery homogenates. It has also been used to assess the guanylate cyclase activity.