Medical Health Encyclopedia

24-hour urine protein

Normally, less than 150 milligrams of protein per day (or 10 milligrams per deciliter) is excreted in the urine. The proteins are derived from plasma and the urinary tract. The most common urine protein in normal individuals is Tamm-Horsfall protein, a glycoprotein that is secreted by distal tubular cells.

Smaller quantities of albumin and globulins are also present in the urine. Most of the filtered proteins are normally reabsorbed by the proximal tubular cells of the kidney.

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