Test library
Rhizopus Nigricans IgE Test
This blood test measures IgE antibodies against Rhizopus nigricans mold spores. It helps assess sensitization in people with allergy symptoms who may be exposed to this common mold.
Order Rhizopus Nigricans Allergy Test
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Rhizopus Nigricans Allergy Test- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
The Rhizopus Nigricans Allergy Test is a blood test that detects IgE antibodies against spores of the Rhizopus nigricans mold. This mold is found in soil, on decaying plant material, and on stored foods, and its spores can become airborne in damp environments. The test is used when mold exposure is suspected of contributing to nasal, eye, or airway symptoms.
What this test measures
Molds release tiny spores that travel through the air and can be inhaled. Rhizopus nigricans is a common mold species associated with damp organic matter, including compost, spoiled food, and moist indoor surfaces. For a sensitized person, inhaling these spores can trigger sneezing, congestion, itchy eyes, or asthma-like symptoms, and the test measures the IgE antibodies involved in that response.
Only a blood sample is required, so there is no skin testing or deliberate exposure to mold. Results are typically reported as a quantitative antibody concentration in kilounits per liter with a graded class. Because people are often exposed to several molds at once, the test may be ordered as part of a broader mold or inhalant panel that includes Alternaria, Cladosporium, Aspergillus, and Penicillium.
People who notice symptoms in damp buildings, basements, greenhouses, or agricultural settings may consider this test. It can also add detail when a general mold panel is positive but the specific mold responsible is unclear. A qualified healthcare provider interprets the finding alongside the person's environment and symptom history.
- Rhizopus nigricans-specific IgE antibodies
- Quantitative mold-specific IgE in kU/L
- Allergen-specific IgE antibody class
- Other mold spore IgE when a broader panel is ordered
- Total serum IgE when included
- Serum eosinophil count when included
- Common inhalant allergens when included in the panel
Why people order this test
- Investigate allergy symptoms that appear in damp or moldy environments
- Check sensitization to a mold found on decaying plant material and stored food
- Add Rhizopus nigricans to a broader mold allergy panel
- Evaluate symptoms in agricultural, greenhouse, or food storage settings
- Clarify whether mold exposure fits the symptom pattern
How to prepare
No fasting is required, and the blood sample can be collected at any time. Follow the lab's routine instructions for blood draws.
Understanding your results
Results are usually available within one to three business days. A positive result indicates sensitization to Rhizopus nigricans rather than a confirmed cause of symptoms. A qualified healthcare provider interprets the level together with the person's exposure history and other allergy findings.
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Frequently Asked Questions
Where is Rhizopus nigricans found?
It is a common mold in soil, on decaying plant matter, and on stored foods. Spores can become airborne, especially in damp conditions.
Can mold allergy cause breathing problems?
Mold exposure can contribute to nasal and eye symptoms and, in some sensitized people, to airway symptoms. A clinician should evaluate persistent or severe breathing symptoms.
Is this test done by skin prick?
No. It is a blood test that measures IgE antibodies, so no skin pricking or mold exposure is involved.
Should other molds be tested at the same time?
Many people are exposed to several molds, so a broader mold panel is often ordered. A clinician can advise on the most useful set.
Does a positive result mean I must move or renovate?
No. Results describe sensitization. Practical decisions about the home or workplace are best discussed with a qualified professional.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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