Order Immunoglobulin A (IgA) Blood Test from JustLabs for $10 ($28 all-in for a single-test order: $10 + one $18 lab & physician order fee per order). Price includes lab processing at Quest Diagnostics. No insurance required.
IgA is an antibody that plays a crucial role in mucosal immunity, protecting your respiratory and digestive tracts. Testing IgA levels helps assess immune function and is essential before celiac disease testing.
Immunoglobulin A (IgA) is an antibody that provides protection at mucosal surfaces—the linings of your respiratory tract, digestive system, urinary tract, and other areas exposed to the outside world. It's your first line of defense against many pathogens.
IgA is particularly important in celiac disease testing because most celiac tests measure IgA-based antibodies (like TTG-IgA). About 2-3% of people have IgA deficiency, which can cause false-negative celiac results. Testing total IgA alongside celiac antibodies ensures accurate interpretation.
IgA deficiency is the most common primary immunodeficiency, often asymptomatic but sometimes associated with recurrent infections or autoimmune conditions.
Price
$10
All-in
$28
incl. $18 lab & physician fee
Results
2-3 business days
Fasting
Not Required
What's Measured
What This Test Measures
This test measures the total concentration of IgA antibodies in your blood, reported in mg/dL. It does not test for specific infections—it measures overall IgA production.
Who Should Consider This Test
Anyone being tested for celiac disease (to ensure accurate results), people with recurrent respiratory or GI infections, those with suspected immunodeficiency, individuals with autoimmune conditions, and people with chronic sinusitis or bronchitis.
Health Insights
Conditions Screened
Related Symptoms
When to Get Tested
No fasting required. Always test total IgA when ordering celiac disease testing to ensure accurate interpretation of results.
No fasting needed. How to prepare for your blood test →
Understanding Your Results
Normal adult IgA: 70-400 mg/dL. IgA deficiency is defined as <7 mg/dL with normal IgG and IgM. Selective IgA deficiency is usually asymptomatic. Elevated IgA can occur in liver disease, autoimmune conditions, and certain cancers.
What to Expect
After placing your order, we send it straight to Quest Diagnostics — there is no consent form to sign and no partner email to wait for. Your requisition is usually ready to download from your dashboard within about an hour, and you can book your blood draw at any Quest Diagnostics location.
The blood draw typically takes just a few minutes. Results are usually available within 2-3 business days and will appear in your secure JustLabs dashboard.
Our results include reference ranges and easy-to-understand indicators showing whether your values are within normal limits.
How much does the IgA test cost?
The IgA test costs $10 at JustLabs — $28 all-in, since the $18 lab & physician order fee is charged once per order, however many tests you add. The price is fixed before your blood draw; no insurance or doctor visit needed.
| Option | Price | Order all-in | Notes |
|---|---|---|---|
| IgA at JustLabsDrawn at Quest Diagnostics | $10 | $28 | Includes the one $18 fee, charged once per order |
Paying with an HSA or FSA? See which lab tests qualify
Frequently Asked Questions
Hospital cash price: $150–$300
$10
+ $18 order fee · $28 all-inOne $18 fee per order covers your Quest blood draw and the independent physician order, however many tests you add.
- Results in 2-3 business days
- No fasting required
- Physician order included
No insurance needed · HSA/FSA eligible
- Physician-ordered
- CLIA-certified Quest lab
- Drawn at Quest Diagnostics
Need Help Choosing?
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