Total Immunoglobulins Panel (IgA, IgG, IgM)
This blood test panel measures IgA, IgG, and IgM together to help assess immune function, infection patterns, and some autoimmune clues.
From $58.49 · Quest Diagnostics
- No subscription
- HSA/FSA eligible
- Most results in 3–5 business days
This lab panel measures three major antibody types in your blood—IgA, IgG, and IgM—so you can see whether your immune system’s “antibody output” looks low, typical, or high as a pattern. It is often used when you have recurrent infections, unexplained inflammation, or you are in the middle of an autoimmune or immunology workup and want a clearer baseline than a single test can provide.
Because it is a panel, the most useful interpretation comes from how the three results relate to each other (for example, one low while the others are normal, or all three elevated together), plus your symptoms, medications, and any companion labs your clinician orders.
Do I need this panel?
You may want a Total Immunoglobulins (IgA, IgG, IgM) panel if you keep getting infections that feel “too frequent” or unusually hard to shake—especially sinus, ear, bronchitis, or pneumonia patterns—or if you have chronic diarrhea, poor weight gain, or other signs that can overlap with immune deficiency or gut immune issues.
This panel is also commonly used when you are being evaluated for autoimmune disease or chronic inflammation and you want to know whether your antibody levels are globally high (which can happen with ongoing immune activation) or unexpectedly low (which can change how other antibody-based tests are interpreted).
It can be especially helpful if you have a positive screening test (like an ANA) and you are worried it automatically means a diagnosis. Immunoglobulin levels do not diagnose a specific autoimmune condition, but they can add context about whether your immune system looks broadly activated, suppressed, or affected by medications.
Your results are most useful when they support clinician-directed care rather than self-diagnosis—especially if you are considering immunosuppressive therapy, have a complex infection history, or need follow-up testing such as vaccine antibody responses or serum protein electrophoresis.
This panel measures total serum IgA, IgG, and IgM; reference ranges vary by lab, age, and clinical context, so interpretation should use your report’s ranges and your history.
Order labs to measure Immunoglobulins (IgA, IgG, IgM)
from $58.49 at Quest Diagnostics.
Get this panel with Vitals Vault
You can order this lab panel through Vitals Vault to check IgA, IgG, and IgM in one blood draw. It is a practical starting point when you want to move from “I feel like something is off” to a measurable baseline you can discuss with your clinician.
After you get results, the next step is pattern-based interpretation: whether one immunoglobulin is selectively low, whether multiple are low, or whether levels are broadly elevated. Those patterns can guide what you consider next—such as reviewing medications, looking for protein loss, evaluating chronic infections, or adding more targeted immune testing.
If your results raise questions, PocketMD can help you translate the numbers into plain language and generate a focused list of follow-up questions for your next appointment. If you are tracking a known condition or treatment, repeating the same panel over time can be more informative than chasing one-off results.
- Order online and complete testing through a standard lab draw
- Clear, panel-based interpretation that focuses on patterns across IgA, IgG, and IgM
- PocketMD support to help you prepare for follow-up with your clinician
- Useful for trending over time when monitored in the same lab system
Key benefits of Total Immunoglobulins Panel For Iga Igg Igm
- 01Shows your baseline antibody levels across three major immunoglobulin classes in a single panel.
- 02Helps flag patterns consistent with immune deficiency risk (for example, low IgG with recurrent sinopulmonary infections).
- 03Adds context during autoimmune or chronic inflammation workups when antibody production may be globally increased.
- 04Supports medication review when therapies (like steroids or B‑cell–targeting drugs) can lower immunoglobulins over time.
- 05Helps you avoid false reassurance from a single “normal” value by checking IgA, IgG, and IgM together.
- 06Guides smarter next-step testing (such as IgG subclasses, vaccine response titers, or protein electrophoresis) when indicated.
- 07Creates a trackable panel you can repeat to monitor trends during treatment changes or evolving symptoms.
What is the Total Immunoglobulins (IgA, IgG, IgM) panel?
This is a blood test panel that measures total levels of three antibody types (immunoglobulins) circulating in your serum: IgA, IgG, and IgM. Antibodies are proteins made by B cells (a type of white blood cell) that help your immune system recognize and respond to infections and other immune triggers.
Each immunoglobulin class has a different “job description.” IgA is strongly linked to mucosal surfaces (like the respiratory and gastrointestinal tracts). IgG is the most abundant antibody in blood and plays a central role in long-term immune memory and many infection-fighting responses. IgM is often an early responder and can rise in some acute infections or specific immune conditions.
Because these three markers are related but not interchangeable, a panel view matters. For example, a selectively low IgA can show up with normal IgG and IgM, while a broader reduction across multiple immunoglobulins can suggest a different set of causes and next steps. On the other side, a broad elevation across immunoglobulins can reflect chronic immune activation, while a more isolated elevation may point you toward more targeted evaluation.
This panel does not tell you whether your antibodies are “working” against specific germs. If function is the question—such as whether you respond to vaccines—your clinician may pair this panel with specific antibody titers (for example, pneumococcal antibody responses) or other immune studies.
What do my panel results mean?
Low
Low results across the panel (or a selectively low immunoglobulin)
Low immunoglobulin results can mean your body is producing fewer antibodies than expected, losing proteins, or being affected by medications or medical conditions that reduce antibody levels. The pattern matters: a selectively low IgA with normal IgG and IgM can be seen in selective IgA deficiency and may relate to recurrent respiratory or GI infections (or no symptoms at all), while low IgG (with or without low IgA/IgM) is more concerning for impaired infection defense and may warrant follow-up testing. If multiple immunoglobulins are low, clinicians often consider secondary causes (like protein loss through the gut or kidneys, certain cancers, or immune-suppressing drugs) before concluding a primary immune deficiency.
Optimal
Results in the expected range (balanced IgA, IgG, and IgM)
When IgA, IgG, and IgM are all within your lab’s reference ranges, it suggests your overall antibody quantities are typical at the time of testing. This can be reassuring if you are checking for a major antibody deficiency, but it does not rule out every immune problem—some people have normal total levels but reduced responses to specific vaccines or recurrent infections for non-immune reasons (like anatomy, allergies, asthma, or exposure patterns). In autoimmune workups, “normal” immunoglobulins also do not confirm or exclude a diagnosis; they mainly provide context for how activated (or suppressed) your antibody production appears overall.
High
High results across the panel (or one immunoglobulin higher than the others)
Higher immunoglobulin levels can reflect immune activation—your body making more antibodies in response to ongoing inflammation, chronic infection, liver disease, or autoimmune activity. A broad increase across IgA, IgG, and IgM is often described as polyclonal hypergammaglobulinemia and is usually a sign of generalized immune stimulation rather than a single abnormal clone. If one immunoglobulin is disproportionately high, clinicians may look for more specific explanations and sometimes add tests that evaluate antibody patterns in more detail (for example, serum protein electrophoresis and immunofixation) to distinguish benign inflammation from less common plasma cell or lymphoproliferative conditions.
Factors that influence IgA, IgG, and IgM results
Your immunoglobulin pattern can shift with timing and context. Recent or chronic infections, autoimmune flares, and inflammatory conditions can raise levels. Medications such as corticosteroids, certain chemotherapy agents, and B‑cell–depleting therapies can lower immunoglobulins, sometimes gradually. Protein loss (kidney disease with proteinuria, protein-losing enteropathy), severe burns, and some blood cancers can also reduce measured levels. Age and pregnancy-related physiology can affect reference ranges, and dehydration can make concentrations look higher. If your panel results do not match how you feel, it is reasonable to review medications, recent illnesses, and whether follow-up testing should focus on antibody function (vaccine titers) or on causes of protein loss or immune activation.
What’s included in this panel
- Immunoglobulin A
- Immunoglobulin G
- Immunoglobulin M
Similar lab panels to consider
Frequently Asked Questions
Do I need to fast for the Total Immunoglobulins (IgA, IgG, IgM) panel?
Fasting is not usually required for total IgA, IgG, and IgM. If you are combining this panel with other labs (like lipids or glucose/insulin testing), follow the fasting instructions for the full set of tests you are ordering.
How should I interpret the panel if only one immunoglobulin is abnormal?
Single-marker changes are common and the “which one” matters. A low IgA with normal IgG/IgM can be a selective pattern, while an isolated high IgM or high IgA may suggest a different set of causes than a broad elevation. The next step is usually to review symptoms, recent infections, medications, and whether follow-up testing is needed (for example, IgG subclasses, vaccine antibody responses, or protein electrophoresis).
Can normal IgA, IgG, and IgM rule out immune deficiency?
Normal totals make a major quantitative antibody deficiency less likely, but they do not rule out functional antibody problems (poor response to vaccines), immune dysregulation, or non-immune causes of frequent infections. If your history strongly suggests an immune issue, your clinician may add vaccine titers or other immune studies even when totals are normal.
What is the difference between total immunoglobulins and IgG subclasses?
Total immunoglobulins measure the overall amount of IgA, IgG, and IgM. IgG subclasses break IgG into subtypes (IgG1, IgG2, IgG3, IgG4). Subclass testing can be useful in selected cases—especially recurrent sinopulmonary infections—when total IgG is normal or borderline but clinical suspicion remains.
If my immunoglobulins are high, does that mean I have an autoimmune disease?
Not necessarily. High immunoglobulins can occur with many kinds of immune activation, including chronic infections, inflammatory conditions, liver disease, and autoimmune activity. This panel is a context-setting test; diagnosis usually depends on your symptoms, exam, and more specific antibody tests and imaging when appropriate.
Should I repeat this panel, and if so, when?
Repeating can be helpful if you are monitoring a known condition, tracking the impact of medications that affect B cells or antibody production, or confirming whether an abnormal result persists after an illness resolves. The right interval depends on why you tested; many people recheck in weeks to months rather than days, unless a clinician advises otherwise.