12-keto Lithocholic acid is a metabolite of the secondary bile acid deoxycholic acid (DCA; Item Nos. 20756 | 18231). Fecal levels of 12-keto lithocholic acid are elevated in rats fed a diet supplemented with cholic acid or DCA compared with rats fed a control diet or a diet supplemented with cholesterol , hyodeoxycholic acid (HDCA; ), or lithocholic acid (LCA; ). 12-keto Lithocholic acid activates the human pregnane X receptor (PXR; EC50 = 31.3 μM in a cell-based transactivation assay). 12-keto Lithocholic acid levels are increased in duodenal bile from patients with type 2 diabetes.