Nephrology

Protein

Normal Range
Negative to Trace (< 150 mg/day or < 15 mg/dL)
Sample Type
Standard
Fasting
No
Unit
mg/dL

Protein in a urine routine (proteinuria) is a fundamental indicator of renal health. In a healthy state, the glomerular basement membrane prevents large proteins like albumin from entering the filtrate. This component measures the presence of proteins, primarily albumin, in the urine. Sustained proteinuria is a hallmark of chronic kidney disease (CKD), glomerular damage, or systemic conditions affecting the kidneys like Diabetes Mellitus or Hypertension. It is also used to screen for preeclampsia in pregnancy.

Check Your Result

Check Your Result

Interactive
mg/dL

Enter your lab result to see where you stand compared to the standard reference range.

Why Context Matters

False positives are common due to high urine concentration (dehydration), alkaline urine (pH > 8), presence of blood (hematuria), or heavy exercise within 24 hours. Orthostatic proteinuria (protein present only when upright) and fever can also cause transient elevations that do not indicate kidney disease.

Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.

Clinical References

Source-of-truth databases and clinical guidelines for Protein:

Research & Guidelines

Related Indicators

Urine Routine

View Range

Urine - Fatty Casts & Droplets

View Range

Urine For Spot Protein

View Range
DR

Medically Reviewed by Dr. Binoy Babu, MBBS

Board Certified Doctor • 10+ Years Clinical Experience

Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.

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