Rhizopus Nigricans Allergy Test
Rhizopus Nigricans Allergy Test can be requested without a referral, and this overview covers what to expect. The Rhizopus nigricans Allergy Test measures allergic sensitization to a common mold. It is ordered when a person has persistent allergy symptoms and a clinician suspects mold as a trigger.
- Sample type
- blood
- Category
- Allergy
- Turnaround
- 1-3 business days
- Price
- $49
- Referral
- Not required
The Rhizopus nigricans Allergy Test measures allergic sensitization to a common mold. It is ordered when a person has persistent allergy symptoms and a clinician suspects mold as a trigger.
What it measures
- Specific IgE to Rhizopus nigricans — Antibody level linked to allergic response to this mold.
- Total IgE — Overall allergy antibody level, sometimes included for context.
- Other mold IgEs — Often tested together to check for cross-reactivity or multiple mold allergies.
Who it is for
Allergists, immunologists, or primary care clinicians order this test for people with ongoing sneezing, runny nose, or asthma symptoms that may worsen in damp or moldy environments.
Preparation
No fasting or special preparation is required. Tell your clinician about antihistamines or other medications you take, as they may affect test interpretation.
Results and what they mean
Results are reported as a numerical level or class for specific IgE, often with a reference range. A higher level suggests sensitization but does not by itself diagnose an allergy. A clinician interprets results with your history and symptoms. This is general information, not medical advice.
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 rhizopus nigricans 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 is Rhizopus nigricans?
It is a common mold found in soil, decaying plants, and damp indoor spaces.
Does a positive result mean I am allergic?
Not necessarily. It shows your immune system has made antibodies to the mold, but only a clinician can confirm an allergy.
How long do results take?
Typically 1–3 business days after the blood sample is collected.
Can I take allergy medication before the test?
Ask your clinician. Some medications may need to be stopped, but do not change any medication without medical advice.