Reticulin Immunoglobulin G (IgG) Concentration in Serum
This test measures the amount of Immunoglobulin G (IgG), a type of antibody, in your serum. Reticulin is a protein found in connective tissue, and this test may be used to evaluate conditions affecting connective tissue or immune function.
["This test helps assess immune responses or connective tissue disorders."]
Key facts at a glance
- LOINC
- 31584-6
- Short code
- Reticulin IgG Ser-aCnc
- Synonyms
- Reticulin IgG Ser-aCnc
- 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
Why Is This Test Done?
Your healthcare provider may order this test if you have symptoms or conditions linked to immune system activity or connective tissue diseases, such as autoimmune disorders, certain cancers, or chronic inflammatory conditions. It may also be part of a broader evaluation for unexplained symptoms like fatigue, joint pain, or unexplained weight changes.
What Does the Test Involve?
A blood sample is drawn from a vein in your arm. The blood is processed to separate serum, which is then analyzed for IgG levels using an immunoassay method. This process is typically quick and painless, with minimal discomfort.
What Should You Know Before the Test?
No special preparation is usually needed, but inform your healthcare provider about any medications you’re taking, especially those affecting immune function or blood clotting. Avoid alcohol before the test if instructed.
What Are Common Results?
Results are compared to a reference range specific to IgG levels in serum. Elevated or low levels may indicate underlying health concerns that require further medical evaluation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated IgG levels may suggest an overactive immune response, such as in autoimmune diseases (e.g., lupus, rheumatoid arthritis) or certain infections. Low levels could indicate immune deficiencies or other systemic conditions. Reticulin itself is not directly measured here, but elevated IgG may indirectly reflect connective tissue involvement or immune activation. Always consult your provider for interpretation.
Short name
Reticulin IgG
Frequently asked questions
What does an abnormal IgG level mean?
Can diet or supplements affect this test?
Is this test painful?
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