Trichophyton Rubrum Allergy Test
This page explains the trichophyton rubrum allergy test, what it measures, and how to arrange it. The Trichophyton rubrum allergy test is a blood test that checks for an allergic response to Trichophyton rubrum, a common fungus that causes skin, nail, and scalp infections. It is ordered when a person has persistent or unusual allergy symptoms and a fungal infection is suspected as the trigger.
- Sample type
- blood
- Category
- Allergy
- Turnaround
- 1-3 business days
- Price
- $49
- Referral
- Not required
The Trichophyton rubrum allergy test is a blood test that checks for an allergic response to Trichophyton rubrum, a common fungus that causes skin, nail, and scalp infections. It is ordered when a person has persistent or unusual allergy symptoms and a fungal infection is suspected as the trigger.
What it measures
- Trichophyton rubrum-specific IgE — Antibodies that suggest an allergic reaction to this fungus.
- Total IgE — A general measure of allergic tendency, sometimes included for context.
- Eosinophil count — A type of white blood cell that can rise with allergies.
Who it is for
Allergists, dermatologists, or primary care clinicians may order this test when evaluating chronic hives, eczema, or respiratory symptoms that could be linked to a fungal allergy.
Preparation
No fasting or special preparation is needed. Tell your clinician about any medications you take, as some may affect test results.
Results and what they mean
Results are reported as a level or class for Trichophyton rubrum-specific IgE, along with any other markers measured. A clinician interprets these results together with your symptoms and history. This information is not medical advice; only a qualified healthcare professional can diagnose or treat a condition.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the trichophyton rubrum allergy test is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
What does a positive result mean?
It means your immune system has made antibodies to this fungus, suggesting a possible allergy. It does not confirm that your symptoms are caused by it.
Can I take this test at home?
No, this test requires a blood draw at a clinic or lab. Home collection kits are not standard for this specific test.
Is this test covered by insurance?
Coverage varies by plan. Check with your insurance provider before testing to understand your costs.
How accurate is this test?
It is generally reliable for detecting antibodies, but results must be interpreted by a clinician alongside your symptoms and other tests.