Donji Vucetic IgG Immunoglobulin Level (Serum)
This test measures the amount of Immunoglobulin G (IgG), a type of antibody in your blood. IgG helps protect your body from infections and diseases.
["IgG antibodies support long-term immunity by fighting bacteria and viruses."]
Key facts at a glance
- LOINC
- 110176-5
- Short code
- L donovani IgG Msmt Ser
- Synonyms
- L donovani IgG Msmt Ser
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What Does This Test Measure?
IgG is the most abundant antibody in your blood. It plays a key role in defending against infections, including those caused by bacteria and some viruses. Levels can vary depending on your immune response, overall health, and exposure to pathogens.
Why Might You Need This Test?
Your doctor may order this test to check for immune system function, diagnose or monitor conditions like immunodeficiency, autoimmune diseases, or infections. It can also help assess how well vaccines or treatments are working.
Common Reasons for Testing
Common reasons include evaluating immune deficiencies, monitoring chronic illnesses (e.g., lupus, rheumatoid arthritis), diagnosing immune-related disorders, or checking immune response after vaccination.
Sample Collection and Preparation
A blood sample is taken from a vein in your arm. The blood is processed to separate serum (the liquid part without clots) for testing. This test does not require fasting.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
IgG Level
Frequently asked questions
IgG levels can be lower in people with immune system disorders, such as severe combined immunodeficiency (SCID) or HIV/AIDS, or in those who have had recent infections. Very high levels may suggest chronic infections, certain autoimmune diseases, or overproduction of antibodies.
A low IgG level may indicate a weakened immune system, making you more susceptible to infections. This could be due to genetic conditions, certain medications, or chronic illnesses. Your doctor may recommend further testing or treatments to support your immune function.
High IgG levels might suggest chronic infections, autoimmune diseases (like lupus), or conditions where your body produces excessive antibodies. It could also be a result of long-term exposure to certain substances or treatments.
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