Immunoglobulin G (IgG) 24-hour urinary excretion rate
This test measures how much Immunoglobulin G (IgG), a type of antibody, is excreted in your urine over 24 hours. IgG is important for fighting infections and is typically found in blood, but small amounts can appear in urine under certain conditions.
["Understanding your IgG excretion helps assess kidney function and immune response."]
Key facts at a glance
- LOINC
- 30140-8
- Short code
- IgA 24h Ur Ql IEP
- Synonyms
- IgA 24h Ur Ql IEP
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- immunoelectrophoresis
- CPT
- 82784
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if they suspect conditions like kidney disease (such as glomerulonephritis), immune system disorders, or certain types of proteinuria (excess protein in urine). It can also help monitor long-term kidney health or evaluate how well your body is processing antibodies.
What to Expect Before the Test
No special preparation is needed for this test. You’ll provide a 24-hour urine sample collected over a full day, typically starting after your first morning urine void. Your provider will guide you on how to properly collect the sample to ensure accuracy.
What the Test Results Mean
Results are usually expressed in arbitrary units per 24-hour period (e.g., arbitrary units/day). Elevated levels may indicate kidney issues or excessive antibody production, while normal levels suggest healthy filtration and immune function. Always discuss your results with your healthcare provider.
Common Conditions Monitored
This test is often used to diagnose or monitor conditions like chronic kidney disease, certain autoimmune diseases, or conditions affecting protein loss in urine (e.g., nephrotic syndrome). It can also help track responses to treatments.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated IgG in urine can signal kidney problems where proteins, including antibodies, are leaking into the urine. This may occur in conditions like glomerulonephritis, where immune complexes damage kidney filters. Persistently high levels warrant further evaluation to rule out underlying kidney disease or immune disorders.
Short name
IgG Urine Rate
Frequently asked questions
How is the 24-hour urine sample collected?
What if I miss collecting urine for part of the day?
Can I take medications or eat certain foods before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy