Test library
Trichophyton Rubrum IgE Test
A Trichophyton rubrum allergy test measures IgE antibodies against a fungus that is a leading cause of human skin, hair, and nail infections. It helps assess allergic sensitization to this mold.
Order Trichophyton Rubrum 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 Trichophyton Rubrum Allergy Test- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
The Trichophyton rubrum allergy test measures immunoglobulin E antibodies against Trichophyton rubrum, a dermatophyte fungus that commonly affects skin and nails. It is ordered when a provider suspects that allergic sensitization to this organism may be contributing to ongoing symptoms. The test uses a blood sample and is often reviewed alongside other fungal allergy markers.
What this test measures
Trichophyton rubrum is one of the most frequently encountered dermatophytes in humans and a leading cause of infections such as athlete's foot, jock itch, and nail fungus. It survives on keratin and can persist for long periods. In some people, repeated or chronic exposure to the fungus also drives an allergic response that adds to skin discomfort.
The test detects specific IgE antibodies in serum with a laboratory immunoassay and reports a quantitative value plus a reactivity class. Dermatophyte allergens can overlap with one another, so clinicians often interpret this result together with other fungal panels. Collection requires only a blood draw.
A positive result reflects immune sensitization, not proof of an active infection. The two can exist together or separately. A qualified healthcare provider evaluates the result with the clinical examination, the person's history of skin or nail problems, and any other testing before recommending next steps.
- Trichophyton rubrum-specific IgE antibodies
- Total serum IgE
- Quantitative allergen-specific IgE level
- IgE reactivity class for Trichophyton rubrum
- Dermatophyte cross-reactive allergens
- Trichophyton mentagrophytes marker when co-tested
Why people order this test
- Assess allergic sensitization to a common skin and nail fungus
- Evaluate chronic or recurring skin symptoms
- Support a broader fungal or mold allergy panel
- Review nail or foot problems alongside immune factors
- Provide objective results before discussing care with a provider
- Follow up when skin or nail symptoms persist
How to prepare
No fasting is needed for this blood test. A blood sample is collected from a vein, typically at the arm. Follow any specific instructions from the laboratory if other tests are included in the order.
Understanding your results
Results are usually available within one to three business days. The report lists the specific IgE level and a reactivity class for Trichophyton rubrum. An elevated value suggests sensitization rather than active infection, and a healthcare provider interprets it with your history.
Trichophyton Rubrum IgE Test by state
Alabama
Trichophyton Rubrum IgE Test across Alabama.
Alaska
Trichophyton Rubrum IgE Test across Alaska.
Arizona
Trichophyton Rubrum IgE Test across Arizona.
Arkansas
Trichophyton Rubrum IgE Test across Arkansas.
California
Trichophyton Rubrum IgE Test across California.
Colorado
Trichophyton Rubrum IgE Test across Colorado.
Connecticut
Trichophyton Rubrum IgE Test across Connecticut.
Delaware
Trichophyton Rubrum IgE Test across Delaware.
Florida
Trichophyton Rubrum IgE Test across Florida.
Georgia
Trichophyton Rubrum IgE Test across Georgia.
Hawaii
Trichophyton Rubrum IgE Test across Hawaii.
Idaho
Trichophyton Rubrum IgE Test across Idaho.
Related tests
12 Panel Drug Test (Drugs of Abuse Testing), Hair
Compare 12 Panel Drug Test (Drugs of Abuse Testing), Hair options and order online.
12 Panel Drug Testing
Compare 12 Panel Drug Testing options and order online.
7 Panel Drug Test (Drugs of Abuse Testing), Hair
Compare 7 Panel Drug Test (Drugs of Abuse Testing), Hair options and order online.
9 Panel Drug Test
Compare 9 Panel Drug Test options and order online.
9 Panel Drug Test (Drugs of Abuse Testing), Hair
Compare 9 Panel Drug Test (Drugs of Abuse Testing), Hair options and order online.
Frequently Asked Questions
What is Trichophyton rubrum?
It is a dermatophyte fungus and a leading cause of skin and nail infections in humans, including athlete's foot and nail fungus.
How is this test different from a fungal culture?
A culture looks for an active infection by growing the organism. This blood test measures allergic sensitization by detecting IgE antibodies.
Do I need to fast?
No. Fasting is not required for this test.
What does an elevated result mean?
It means the immune system has produced antibodies against the fungus, which indicates sensitization. A provider interprets it with your symptoms.
Can both allergy and infection be present at once?
Yes. A person can have an active dermatophyte infection and allergic sensitization at the same time, so providers assess both.
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.
Reviewed by the LabOrdering Editorial Team
Every page on this site is reviewed for clarity, sourcing, and accuracy. We update our library as testing options, collection networks, and accreditation standards change.