Mexican Anti-IgG Immunoglobulin Subclass Measurement (Serum)
This test measures antibodies against IgG, a key part of your immune system, in your blood serum. It may be used to assess immune responses or detect certain autoimmune conditions.
["This test helps evaluate immune function and potential autoimmune reactions."]
Key facts at a glance
- LOINC
- 110729-1
- Short code
- L mexicana IgG Msmt Ser
- Synonyms
- L mexicana 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
- 86038
- 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 This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms of an immune disorder, such as chronic fatigue, unexplained infections, or autoimmune conditions. It could also be part of a broader evaluation for conditions like lupus, rheumatoid arthritis, or other antibody-related diseases.
What to Expect Before the Test
No special preparation is typically needed. You may be asked to fast for 8–12 hours before the blood draw if instructed by your provider. Wear comfortable clothing and plan to rest afterward, as drawing blood can cause lightheadedness.
How the Test Works
A small sample of your blood is taken from a vein, usually in your arm. The serum portion is then analyzed to detect specific antibodies against IgG, using an immunoassay method to identify their presence.
What the Results Mean
Results may indicate normal immune function, an abnormal immune response, or potential autoimmune activity. Your provider will interpret the results in the context of your symptoms and medical history.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: This test helps identify whether your immune system is producing unusual antibodies against IgG, which could signal an autoimmune condition or an immune reaction to certain substances (e.g., infections, medications, or environmental triggers).
Short name
Mexican Anti-IgG Test
Frequently asked questions
What causes abnormal IgG antibody levels?
How long does it take to get results?
Can lifestyle changes 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