Ordering the Immunoglobulin G Subclasses (1-4) Test
Ordering the Immunoglobulin G Subclasses (1-4) Test can help identify specific immune system issues. This test measures the levels of different IgG subclasses in your blood, which can provide insights into your immune response. Interestingly, each subclass plays a unique role in fighting infections and maintaining immune balance.
When you order this test, you can expect the following benefits:
- Identify potential immune deficiencies.
- Monitor immune system function over time.
- Assist in diagnosing certain autoimmune conditions.
- Evaluate response to immunotherapy.
- Help in understanding chronic infection patterns.
Who Should Consider the Test
People experiencing frequent infections or unexplained fatigue might find this test beneficial. For example, someone who often catches colds or has recurring sinus infections may gain valuable information from this test.
Consider ordering this test if you:
- Have a family history of immune disorders.
- Experience frequent respiratory infections.
- Have been diagnosed with an autoimmune condition.
- Are undergoing immunotherapy treatment.
- Have unexplained chronic fatigue.
Testing can reveal specific immune deficiencies, helping guide treatment decisions. Delaying this test might result in prolonged symptoms or ineffective treatments.
How to Prepare for the Test
No fasting is required before taking the Immunoglobulin G Subclasses (1-4) Test. It’s important to follow any instructions from your doctor or healthcare professional to ensure the process goes smoothly.
Labs Included When Ordering Your Immunoglobulin G Subclasses (1-4) Test
| Test Name | Reference Range | Significance | Low and High Levels of Immunoglobulin G Subclasses (1-4) |
|---|---|---|---|
| Immunoglobulin G Subclass 1 | 382-929 | This subclass is the most abundant and plays a key role in protecting against bacterial and viral infections. | High levels mean possible chronic infection or inflammation.
Low levels mean potential immune deficiency. |
| Immunoglobulin G Subclass 2 | 241-700 | This subclass is important for fighting polysaccharide antigens found in bacterial capsules. | High levels mean possible autoimmune activity.
Low levels mean increased risk of bacterial infections. |
| Immunoglobulin G Subclass 3 | 22-178 | This subclass is involved in the early response to infections and is effective against protein antigens. | High levels mean potential chronic inflammation.
Low levels mean susceptibility to infections. |
| Immunoglobulin G Subclass 4 | 2-96 | This subclass is less common and is associated with allergic responses and immune regulation. | High levels mean possible allergic conditions.
Low levels mean potential immune dysregulation. |
Reference ranges may differ. Visit the Quest Diagnostics lab test directory for the latest values.
Immunoglobulin G Subclasses (1-4) FAQ
Is there Immunoglobulin G Subclasses testing near me?
To find nearby locations for Immunoglobulin G Subclasses testing, use the patient service center locator. This is especially helpful if you need a convenient site for sample collection due to frequent infections or immune concerns.
What is the cost of the test?
The cost of the test includes all fees, such as sample collection at patient service center locations. It’s worth ordering to identify specific immune deficiencies that could be affecting your health.
How often should I retest?
Retesting is generally recommended every 6 to 12 months, especially if you have ongoing symptoms or are undergoing treatment. Regular testing helps monitor changes in your immune response.
How accurate is the test?
The test uses nephelometry to measure immunoglobulin levels, providing precise results. TrueHealthLabs.com partners with CLIA-certified laboratories to uphold rigorous testing standards for dependable results.
Medical Review Board
Reviewed by Jeff Donohue M.D. from Body Logic and Brady Hurst DC, CCCN. Written by True Health Lab’s team of editorial health contributors.
Disclaimer: This information is for educational purposes only and not intended as medical advice. Consult your healthcare provider for personalized guidance.
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