Retinol Binding Protein in Urine
Laboratory Tests
estimated about CNY 100-300
(estimated about USD 15-45)
24 hr
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Description
Retinol binding protein in urine helps assess early kidney damage, especially in diabetes or hypertension; costs ¥15–45 at Chinese hospitals, with ChinaMedicalHub assisting with booking and interpreter support.
Main Uses
The primary purpose of measuring urinary RBP is to assess early kidney damage, especially in the renal tubules. It is useful in diagnosing and monitoring conditions such as diabetic nephropathy, hypertensive nephrosclerosis, and other forms of chronic kidney disease. Urinary RBP is also used to evaluate the effectiveness of treatments aimed at preserving kidney function.
Normal Range
The normal range for RBP (Retinol Binding Protein) in urine is typically less than 0.2 mg/L or 0.2 μg/mL, but this can vary slightly depending on the laboratory and testing method used.
Low Values - Possible Causes
Low levels of RBP in urine are not commonly a concern and may be due to: 1. Adequate kidney function, 2. Proper vitamin A metabolism, 3. No significant tubular damage, 4. Normal hydration status, 5. Absence of conditions that would cause increased excretion.
High Values - Possible Causes
High levels of RBP in urine can indicate: 1. Early-stage kidney disease, particularly tubular damage, 2. Diabetic nephropathy, 3. Hypertensive nephrosclerosis, 4. Acute tubular necrosis, 5. Heavy metal poisoning or other toxic exposures affecting the kidneys.