Abstract
A novel double-isotope assay for prostaglandin 15-hydroxydehydrogenase (PGDH) is described. 2 The assay is simple, rapid, precise, completely specific for PGDH, and free from artefacts. The results obtained correlate well with a conventional assay. 3 The method is versatile, being applicable to estimations of enzyme activity in cell-free systems as well as perfused organs, and is well suited to the assay of PGDH inhibitors.