abnormal urine uric acid level decreased urine uric acid level 2011-11-08T03:49:43Z MP:0011424 MPheno.ontology abnormally low amount in the urine of the final oxidation product of purine catabolism in humans and primates, but which in rodents and most other mammals is normally is further oxidized by uricase to allantoin that is excreted in the urine csmith decreased urine urate level hypouricosuria hypouricuria