Immunoglobulin IgG Subclasses Test: Comprehensive Immune System Analysis
Understanding the Importance of IgG Subclasses Testing
The Immunoglobulin IgG Subclasses Test represents a sophisticated approach to evaluating immune system function by examining the specific distribution of IgG antibody subclasses. While standard immunoglobulin tests measure overall antibody levels, this specialized assessment provides granular insights into the four distinct IgG subclasses that play unique roles in immune defense. Each subclass has specific biological functions and responds differently to various pathogens, making this test essential for comprehensive immune evaluation.
What the Test Measures and Detects
This advanced diagnostic test precisely measures:
- IgG Subclass 1 (IgG1): The most abundant subclass, crucial for fighting viral infections and protein antigens
- IgG Subclass 2 (IgG2): Primarily targets polysaccharide antigens from encapsulated bacteria
- IgG Subclass 3 (IgG3): Important for viral and protein antigen responses with strong inflammatory activity
- IgG Subclass 4 (IgG4): Involved in chronic antigen exposure and allergic responses
- Total IgG: Overall immunoglobulin G levels for comprehensive assessment
Clinical Applications and Detection Capabilities
The test identifies specific IgG subclass deficiencies that can lead to recurrent infections despite normal total IgG levels. It detects imbalances in subclass distribution that may indicate underlying immune disorders, autoimmune conditions, or selective antibody deficiencies affecting specific pathogen responses.
Who Should Consider This Test
This test is particularly recommended for individuals experiencing:
- Recurrent bacterial infections, especially respiratory tract infections
- Frequent sinusitis, bronchitis, or pneumonia episodes
- Chronic gastrointestinal infections or inflammatory bowel disease
- Autoimmune disorders with suspected immune dysfunction
- Unexplained fatigue and susceptibility to infections
- Family history of immunodeficiency disorders
- Poor response to vaccinations
- Children with recurrent ear infections or failure to thrive
Symptoms Indicating Need for Testing
Patients presenting with persistent symptoms such as chronic cough, recurrent fever episodes, unexplained weight loss, or delayed wound healing may benefit from IgG subclass evaluation to identify potential immune deficiencies.
Benefits of Taking the Immunoglobulin IgG Subclasses Test
Undergoing this comprehensive immune assessment provides numerous advantages:
- Precise Diagnosis: Identifies specific subclass deficiencies that standard tests might miss
- Targeted Treatment: Enables development of personalized treatment strategies
- Early Intervention: Facilitates early detection of immune disorders before complications develop
- Comprehensive Assessment: Provides detailed insight into multiple aspects of immune function
- Monitoring Tool: Allows tracking of immune response to treatments or disease progression
- Preventive Care: Helps implement preventive measures for infection-prone individuals
Understanding Your Test Results
Interpreting IgG subclass results requires professional medical expertise, but general guidance includes:
Normal Results Interpretation
Normal levels across all four subclasses with appropriate total IgG typically indicate adequate immune function. However, clinical correlation with symptoms is essential, as some individuals may have normal levels but functional antibody deficiencies.
Abnormal Results Guidance
Specific subclass deficiencies may indicate:
- IgG1 Deficiency: Increased susceptibility to viral and protein antigen infections
- IgG2 Deficiency: Higher risk of infections from encapsulated bacteria
- IgG3 Deficiency: Potential for recurrent viral infections
- IgG4 Deficiency: May be associated with certain autoimmune conditions
Clinical Correlation Importance
Results should always be interpreted in the context of clinical symptoms, medical history, and other laboratory findings. Some individuals may have subclass deficiencies without clinical symptoms, while others with normal levels may experience immune dysfunction.
Test Pricing and Availability
| Test Component | Price (USD) |
|---|---|
| Immunoglobulin IgG Subclasses Test Includes IgG1, IgG2, IgG3, IgG4, and Total IgG |
Discount Price: $550 USD Regular Price: $700 USD |
Test Specifications
- Turnaround Time: Sample collection by 7th of the month; Results available within 2-3 weeks
- Sample Type: 3 mL (1.5 mL minimum) serum from 1 SST tube
- Shipping Requirements: Ship refrigerated or frozen
- Mandatory Documentation: Duly filled Test Send Out Consent Form (Form 35)
- Testing Method: Nephelometry for precise quantification
Nationwide Availability and Booking
GGC DNA provides comprehensive Immunoglobulin IgG Subclasses testing services across the United States. We have conveniently located branches in all major cities including New York, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, San Antonio, San Diego, Dallas, and San Jose. Our state-of-the-art facilities ensure accurate testing and reliable results.
Take Control of Your Immune Health Today
Don’t let recurrent infections or unexplained symptoms compromise your quality of life. Our Immunoglobulin IgG Subclasses Test provides the detailed immune system analysis needed to identify underlying deficiencies and guide effective treatment strategies.
Ready to understand your immune health? Book your Immunoglobulin IgG Subclasses Test today!
Call or WhatsApp: +1(267) 388-9828
Our experienced healthcare professionals are available to answer your questions, schedule your test, and provide guidance throughout the testing process. Take the first step toward comprehensive immune health assessment and personalized care.

