What are isolated and post-renal proteinuria?

Updated: Mar 25, 2020
  • Author: Beje Thomas, MD; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Isolated proteinuria is proteinuria without any abnormalities in urinary sediment, hematuria, or a reduction in GFR and in the absence of hypertenson and diabetes. Isolated proteinuria is usually found on routine urinalysis in the non-nephrotic range. It is caused by damage to tubular cells or the lower urinary tract.

Post-renal proteinuria occurs with inflammation of the urinary tract.  Common conditions thought to be associated with post-renal proteinuria are urinary tract infection, nephrolithiasis, and tumors of the urinary tract. Post-renal proteinuria usually resolves when the underlying condition has resolved.

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