Persistent proteinuria can be caused by a variety of conditions, including:
Glomerulonephritis: An inflammation of the kidney's filtering units (glomeruli). Nephrotic Syndrome: A syndrome characterized by high levels of protein in the urine, low blood protein levels, and swelling. Diabetes: Poorly controlled diabetes can lead to kidney damage and proteinuria. Hypertension: High blood pressure can damage the kidneys and cause proteinuria. Lupus: An autoimmune disease that can affect the kidneys.
