Human Enkephalin (ENK) ELISA Kit for detecting ENK in serum, plasma, tissue homogenates, cell lysates, cell culture supernatants, other biological fluids. Species Reactivity: Human (Homo sapiens). Detection Range: 15.6-1000pg/ml. Sensitivity: 6.85pg/ml. Format: 96-Well Plate. Assay Type: Competitive inhibition. Assay Time: 3h. Restrictions: For Research Use Only. Not for use in diagnostic procedures.