Health examinations
尿蛋白 Urine Protein
Urine Protein (Proteinuria): Indicator of Kidney and Systemic Health

*Proteinuria refers to the presence of abnormal amounts of protein in urine. Normally, kidney filtration prevents most proteins from entering urine. Detection of urine protein suggests impaired kidney function or other systemic diseases.

*Normal Range
Normal Value: Negative(-)
Abnormal Value: Positive protein or ≥30 mg/dL, requiring further investigation.

*Causes of Proteinuria
-Kidney Diseases:
--Nephritis: Conditions like glomerulonephritis or nephrotic syndrome.
--Diabetic Nephropathy: Glomerular damage caused by diabetes.
--Hypertensive Nephropathy: Kidney damage from prolonged high blood pressure.
-Temporary Causes:
--Dehydration, Strenuous Exercise, Fever, Stress: Can lead to short-term proteinuria.
-Systemic Diseases:
--Autoimmune Disorders: Such as systemic lupus erythematosus (SLE).
--Multiple Myeloma: Kidney damage caused by abnormal immunoglobulins.
-Other Causes:
--Pregnancy-Related Proteinuria: May indicate preeclampsia.

*Symptoms and Risks
-Early Stages: Often asymptomatic; proteinuria is a critical early marker of kidney disease.
-Persistent Proteinuria: Can lead to swelling (edema), high blood pressure, and declining kidney function.

*Prevention and Management of Proteinuria
-Control Underlying Conditions:
For diabetes and hypertension patients, adhere to medication schedules and manage blood sugar and blood pressure levels.
-Healthy Lifestyle:
Maintain a balanced diet, reduce salt intake, and avoid high-protein diets to minimize kidney strain.
-Avoid Nephrotoxic Factors:
Limit long-term use of nonsteroidal anti-inflammatory drugs (NSAIDs) and other nephrotoxic medications.
-Regular Checkups:
Chronic disease patients should routinely test for urine protein and monitor kidney function (e.g., eGFR).

*Conclusion
Proteinuria may signal kidney or systemic diseases and should not be ignored. Early detection through routine checkups, managing chronic conditions, and adopting a healthy lifestyle can prevent the progression of proteinuria. Persistent findings of urine protein warrant prompt medical evaluation for accurate diagnosis and treatment.