Immunoglobulin G (IgG) 24-Hour Urine Collection (Total Protein or Specific Protein)
This test measures the amount of Immunoglobulin G (IgG), a type of protein found in urine, over a 24-hour period. It helps assess kidney function and detect protein loss in urine, which may indicate conditions like kidney disease or other health issues.
["This test helps monitor kidney health by checking for excessive protein in urine, often linked to IgG-related kidney problems."]
Key facts at a glance
- LOINC
- 44595-7
- Short code
- IgG 24h Ur Ql IFE
- Synonyms
- IgG 24h Ur Ql IFE
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- immunofixation
- 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 Is Done
Your doctor may order this test if you have symptoms like swelling, frequent urination, or unexplained weight changes. It’s also used to monitor kidney function in people with conditions like diabetes, high blood pressure, or kidney disease. Sometimes, it’s part of a broader evaluation for unexplained protein in urine.
What to Expect Before the Test
You’ll need to collect all urine for 24 hours in a special container. Drink plenty of fluids to ensure a full collection. Avoid certain medications or foods that might affect protein levels, as instructed by your healthcare provider.
What the Test Results Mean
Higher-than-normal IgG in urine may suggest kidney damage or disease. Lower-than-normal levels could indicate dehydration or other health issues. Your doctor will interpret results in the context of your medical history and other tests.
Common Conditions This Test Helps Diagnose
Excessive IgG in urine can signal kidney problems like nephrotic syndrome, glomerulonephritis, or other protein-losing conditions. It may also help identify early kidney damage in people with risk factors like diabetes or high blood pressure.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
IgG in urine is typically filtered by the kidneys. If present in abnormal amounts, it may indicate impaired kidney function or specific kidney diseases. Early detection can help manage conditions like proteinuria (protein in urine) and guide treatment decisions.
Short name
IgG Urine Protein Profile (24h)
Frequently asked questions
What causes IgG to appear in urine?
How often should this test be repeated?
Can diet or medications affect 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