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What is proteinuria?

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People with proteinuria have urine containing an abnormal amount of protein. The condition is often a sign of kidney disease.

Healthy kidneys do not allow a significant amount of protein to pass through their filters, but filters damaged by kidney disease may let proteins such as albumin leak from the blood into the urine.

Your body's overproduction of proteins can also lead to proteinuria.

From: Protein in Urine (Proteinuria) WebMD Medical Reference

SOURCES:

Journal of the American Medical Association, JAMA Patient Page: "Proteinuria."

National Kidney and Urologic Diseases Information Clearinghouse: "Proteinuria."

Labtestsonline: "Urine Protein and Urine Protein to Creatinine Ratio" and "Proteinura."

Reviewed by Minesh Khatri on April 10, 2018

SOURCES:

Journal of the American Medical Association, JAMA Patient Page: "Proteinuria."

National Kidney and Urologic Diseases Information Clearinghouse: "Proteinuria."

Labtestsonline: "Urine Protein and Urine Protein to Creatinine Ratio" and "Proteinura."

Reviewed by Minesh Khatri on April 10, 2018

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