Urine Protein

Protein is normally filtered by the kidneys and kept in the bloodstream,
so urine typically contains very little protein.
The presence of excess protein in urine, called proteinuria,
may indicate kidney damage or disease.
Common causes include diabetes, hypertension, infections, or glomerulonephritis.
Tests include dipstick screening, 24-hour urine protein,
and urine protein-to-creatinine ratio.
Early detection of proteinuria is vital to prevent progression to chronic kidney disease (CKD).