Quick Facts
- Sample: Blood serum
- Fasting: Not required
- Turn-around: 3–5 business days. May take longer based on weather, holiday, or lab delays.
Benefits
- Convenient access — Order online without a physician referral or office visit
- Fast results — Receive confidential findings in 3–5 business days
- Early detection — Identify mold sensitization before complications like ABPA develop
- Targeted diagnosis — Pinpoint Aspergillus fumigatus allergy for precise treatment planning
- Proactive health — Manage respiratory conditions effectively by recognizing hidden allergen triggers
Who Is This Test For?
- Individuals with unexplained respiratory symptoms like wheezing, coughing, or chest tightness
- People with asthma or cystic fibrosis are experiencing worsening symptoms
- Anyone with a suspected mold allergy after environmental exposure
- Health-conscious consumers seeking preventive allergy screening
- Patients with compromised immunity at risk for fungal complications
How It Works – Just 3 Steps
- Order online — select your test without a physician referral and choose a convenient lab location
- Visit the lab — a trained phlebotomist collects a small blood sample during a quick appointment
- Access your results — review secure, confidential results online within 3-5 business days
FAQ
What does this test measure? It measures IgE antibodies specific to Aspergillus fumigatus mold in your blood.
Do I need to fast before the test? No fasting required. Avoid antihistamines if instructed by your healthcare provider.
Can this test diagnose aspergillosis infections? It detects allergic responses, not invasive infections. Clinical correlation is essential.
How accurate is this test? Sensitivity and specificity exceed 85% for diagnosing mold-related allergic conditions (Wang et al., Respiratory Research 2025).
Will my results include interpretation? Yes, results include quantitative values with reference ranges.
More Details
What is the purpose of this test?
This blood test detects IgE antibodies your immune system produces in response to Aspergillus fumigatus, one of the most common airborne molds. While most people inhale these spores daily without issue, some individuals develop allergic sensitization that triggers respiratory symptoms. The test uses fluorescence enzyme immunoassay (FEIA) to quantify Aspergillus-specific IgE antibodies with high specificity (Mayo Clinic 2024). Early identification helps prevent severe complications like allergic bronchopulmonary aspergillosis (ABPA), particularly in vulnerable populations (Johns Hopkins Medicine 2024).
Who would benefit from this test?
Anyone experiencing unexplained respiratory symptoms should consider this test. About 5–10% of people with asthma or cystic fibrosis are sensitized to Aspergillus fumigatus, increasing their risk for allergic complications (CDC 2023). This test benefits individuals with persistent coughing, wheezing, or chest tightness not explained by other causes. People with compromised immune systems, chronic lung conditions, or frequent mold exposure also benefit from screening. Health-conscious individuals seeking proactive allergy management can use this test for early detection before symptoms worsen.
When should I order an Aspergillus Fumigatus Allergy IgE Blood Test?
Order this test if you experience persistent respiratory symptoms like wheezing, coughing, shortness of breath, or chest tightness. Consider testing if you have asthma that's difficult to control or worsening despite treatment. Individuals with cystic fibrosis experiencing new respiratory symptoms should screen for Aspergillus sensitization. Order if you've had environmental mold exposure and developed allergic symptoms. Testing is also appropriate for preventive health screening if you have risk factors like compromised immunity or chronic lung disease.
How do I interpret the results?
Results show your Aspergillus-specific IgE level in kUA/L units. Low or undetectable levels indicate no allergic sensitization. Elevated levels suggest allergic response, with higher values correlating to greater sensitization severity.
IgE < 0.35 kUA/L
- Meaning: No sensitization detected
- Action: No allergy treatment needed
IgE 0.35–0.70 kUA/L
- Meaning: Low sensitization
- Action: Monitor symptoms; consider avoidance measures
IgE 0.71–3.50 kUA/L
- Meaning: Moderate sensitization
- Action: Consult allergist; implement environmental controls
IgE 3.51–17.50 kUA/L
- Meaning: High sensitization
- Action: Medical management recommended; allergy treatment plan
IgE > 17.50 kUA/L
- Meaning: Very high sensitization
- Action: Specialist referral; aggressive mold avoidance essential
Elevated Aspergillus-specific IgE above 9.88 kUA/L significantly increases exacerbation risk in ABPA patients.
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.
Pre-test preparation
No fasting is required for this blood test. You can eat and drink normally before your appointment. If you take antihistamines or corticosteroids, consult your healthcare provider about temporarily stopping them, as these medications may affect IgE levels. Wear a short-sleeved shirt for easy blood draw access. Bring your requisition form and photo ID to the lab.
How often should I get tested?
Initial screening for suspected allergy: Once, then retest if symptoms persist
- Diagnosed mold allergy with controlled symptoms: Annually or as symptoms change
- ABPA monitoring: Every 3–6 months or per specialist guidance
- Worsening respiratory symptoms: Retest to assess disease progression
- After environmental remediation: 6–12 months post-intervention
Why early detection matters
Early identification of Aspergillus sensitization prevents severe complications and reduces healthcare costs. Untreated mold allergies can progress to allergic bronchopulmonary aspergillosis, a serious condition causing lung damage in susceptible individuals. Detecting sensitization early allows you to implement environmental controls like reducing indoor humidity and using air purifiers. Early intervention helps prevent asthma exacerbations and emergency visits. Knowing your allergy status empowers you to make informed decisions about your living environment and treatment options, ultimately improving your respiratory health and quality of life.
Related tests you may consider
Total Serum IgE Test — Measures overall allergic sensitization and immune activity for broader allergy assessment
Alternaria alternata Allergy IgE Blood Test — Detects IgE sensitization to Alternaria, a common mold associated with respiratory allergy symptoms.
Allergen Profile, Mold IgE Blood Test — Screens for IgE antibodies to multiple common molds, providing a broader environmental allergy context beyond Aspergillus alone.
