Quick Facts
- Sample: Serum
- Fasting: No special preparation is required.
- Turnaround: 3-6 business days. May take longer based on weather, holiday, or lab delays.
What This Test Measures
The IgA Subclasses (1-2), Serum Blood Test measures three quantitative values in your serum: total IgA, IgA1, and IgA2. IgA is an antibody (immunoglobulin) involved in immune system function, and this test reports the level of each of these three biomarkers.
Each result reflects the amount of that antibody in your blood sample. The test helps your healthcare provider evaluate immune system function and investigate certain antibody deficiencies. It does not measure other immunoglobulins or provide a complete immune assessment.
Benefits
- Measures total IgA, IgA1, and IgA2 levels in a single serum test.
- Helps evaluate immune system function.
- Supports investigation of certain antibody deficiencies.
- Requires no special preparation before your blood draw.
- Provides results online for you to review with your provider.
Who Is This Test For?
- Adults whose healthcare provider wants to evaluate immune system function.
- People being investigated for certain antibody deficiencies.
- Individuals who want to review their IgA, IgA1, and IgA2 levels.
- Anyone following up on IgA results with their healthcare provider.
How It Works
- Order Your Test Online
- Visit a Local Lab
- Get Results Online
FAQ
1. What is the purpose of this test?
This test measures total IgA, IgA1, and IgA2 antibody levels in serum. These measurements may help your healthcare provider evaluate immune system function and investigate certain antibody deficiencies. The test does not diagnose a condition on its own and does not provide a complete evaluation of your immune system.
2. Who would benefit from this test, and when should I order it?
This test may be useful for adults whose healthcare provider wants to evaluate immune system function or investigate certain antibody deficiencies. You may also consider it when you want to review your IgA, IgA1, and IgA2 levels or follow up on previous IgA results. Not everyone with a related concern needs this test, and it does not replace a medical evaluation.
3. What does this test measure?
Three biomarkers are measured in serum: total IgA, IgA1, and IgA2. Each is reported as a quantitative level (quantitation). Other immunoglobulins and related tests are not included.
4. Do I need to fast before this test?
No special preparation is required.
5. How quickly will I get results?
3-6 business days. May take longer based on weather, holiday, or lab delays.
6. How do I interpret the results?
The meaning of your IgA, IgA1, and IgA2 results depends on the specific antibody measured and your clinical context. Your healthcare provider may consider your symptoms, medical history, medications, supplements, timing, specimen quality, methodology, and other laboratory results. One abnormal result does not always confirm a condition, and one normal result does not rule one out.
Disclaimer: Reference ranges may vary by laboratory. Listed ranges are general guidelines and may differ from those used by the performing lab. Always consult your healthcare provider for interpretation.
7. What should I do if my results are abnormal?
Review your results with a qualified healthcare provider, who can explain what the findings mean in the context of your health history and other information. Your provider may consider additional evaluation based on your situation. A single result does not provide a complete clinical conclusion.
8. How often should I get tested?
Testing frequency should be as directed by your healthcare provider. The right timing depends on why the test is being used and your individual situation. More frequent testing is not always beneficial.
Pre-test preparation
No special preparation is required.
