Elevated urinary uromodulin level 2019-07-05T19:52:14Z The concentration of uromodulin (also known as Tamm Horsfall protein) in the urine, normalized for urine concentration, is above the upper limit of normal. Uromodulin (also known as Tamm Horsfall protein) is exclusively produced in the kidney and is the most abundant protein in normal urine. Levels of uromodulin in the urine and in the blood, where it is present in lower amounts, are valuable biomarkers for tubular mass and renal function. Elevated urinary Tamm-Horsfall protein concentration Abnormal urinary uromodulin level