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Causes of Proteinuria

Mechanism

Examples

Glomerular

Primary glomerular disorders (eg, membranous nephropathy, minimal change disease, focal segmental glomerulosclerosis)

Secondary glomerular disorders (eg, diabetic nephropathy, preeclampsia, postinfectious glomerulonephritis, lupus nephritis, amyloidosis)

Tubular

Fanconi syndrome

Acute tubular necrosis

Tubulointerstitial nephritis

Polycystic kidney disease

Overflow

Acute monocytic leukemia with lysozymuria

Monoclonal gammopathy

Multiple myeloma

Myelodysplastic syndromes

Functional or transient proteinuria

Fever

Heart failure

Intense exercise or activity

Unknown

Orthostatic or postural

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