Urine Immunoglobulin G
Laboratory Tests
estimated about CNY 100-300
(estimated about USD 15-45)
24 hr
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Description
Urine Immunoglobulin G testing helps assess kidney glomerular damage in conditions like nephrotic syndrome or diabetic nephropathy, with reference costs of ¥15–45 at partner hospitals in China; ChinaMedicalHub assists with booking and interpreter support.
Main Uses
Urinary Immunoglobulin G (IgG) testing is primarily used to assess kidney function, particularly to detect and monitor glomerular damage. It helps in diagnosing and managing conditions such as glomerulonephritis, nephrotic syndrome, and other renal diseases. The test is also useful in evaluating the effectiveness of treatments for these conditions and in monitoring patients at risk of developing kidney-related complications from systemic diseases.
Normal Range
The normal range for Urinary Immunoglobulin G (IgG) is typically less than 0.1 mg/L. This value can vary slightly depending on the laboratory and the specific testing method used, so it's important to refer to the reference range provided by the lab conducting the test.
Low Values - Possible Causes
Low values of urinary IgG are generally not a concern as they are expected in healthy individuals. However, if abnormally low levels are detected alongside other abnormalities, it might indicate: 1. Insufficient immune response, 2. Certain types of immunodeficiency disorders, 3. Rare genetic conditions affecting protein production or excretion, 4. Overhydration leading to dilution of urine, 5. Technical issues with the sample or testing process.
High Values - Possible Causes
Elevated levels of urinary IgG may be due to: 1. Glomerular damage or disease, such as glomerulonephritis, which allows larger proteins like IgG to pass into the urine, 2. Nephrotic syndrome, characterized by high levels of protein in the urine, 3. Systemic lupus erythematosus (SLE) or other autoimmune diseases that affect kidney function, 4. Infections or inflammation that increase the permeability of the glomerulus, 5. Renal tubular disorders that impair reabsorption of filtered proteins.