A sandwich enzyme immunoassay using a sensitive polyclonal primary antibody quantitatively measures human leptin in serum, plasma, and tissue culture medium. Easily detect concentrations of just a few nanograms per milliliter. Sensitivity, linear range, and signal intensities correlate strongly with standard radioimmunoassays. While providing data that highly correlates with RIA assays, B-Bridge''s Leptin ELISA is faster, easier, and does not require use of radioactivity. B-Bridge's Leptin ELISA will provide you with the data you need quickly and safely. The B-Bridge Leptin ELISA Kit robustly detects as little as 0.5 ng/ml of mouse or rat leptin in serum, plasma, and culture medium. The double sandwich enzyme immunoassay provides reproducible results over a broad dynamic range from assay to assay.