PGE2 is one of the primary COX products of arachidonic acid and one of the most widely investigated prostaglandins. Its activity influences inflammation, fertility and parturition, gastric mucosal integrity, and immune modulation. Because of its involvement in inflammation, PGE2 is the key indicator of non-steroidal anti-inflammatory drugs efficacy via inhibition of COX-1 and COX-2. Cayman Chemical"s PGE2 Express ELISA is a competitive assay that permits the rapid measurement of PGE2 from biological samples, requiring only 1 hour incubation and development times for each step. The foundation of the assay is Cayman"s high-affinity, well-characterized PGE2 monoclonal, the same used in our PGE2 Monoclonal ELISA kit (Cay-514010). While Cay-514010 offers superior sensitivity (80% B/B0 ~15 pg/ml), the new PGE2 Express Assay offers the convenience of a fast assay while still achieving an 80% B/B0 of 36 pg/ml and an assay range of 15.6-2,000 pg/ml.