Black Mold Exposure Test (IgG)
Black Mold Exposure Test (IgG) is a laboratory test you can order directly. A black mold exposure test (IgG) is a blood test that looks for IgG antibodies your immune system may make after contact with molds such as Stachybotrys chartarum, often called black mold. It is usually ordered when someone has ongoing symptoms they suspect are linked to a damp or water-damaged building, though it does not prove that mold is causing symptoms.
- Sample type
- blood
- Category
- General Wellness
- Turnaround
- 1-3 business days
- Price
- $178
- Referral
- Not required
A black mold exposure test (IgG) is a blood test that looks for IgG antibodies your immune system may make after contact with molds such as Stachybotrys chartarum, often called black mold. It is usually ordered when someone has ongoing symptoms they suspect are linked to a damp or water-damaged building, though it does not prove that mold is causing symptoms.
What it measures
- Stachybotrys chartarum IgG — Antibodies against black mold itself.
- Aspergillus IgG — Antibodies against a common indoor mold.
- Penicillium IgG — Antibodies against another common mold.
- Cladosporium IgG — Antibodies against a mold often found on damp surfaces.
- Alternaria IgG — Antibodies against a mold common in dust and air.
Who it is for
It is typically ordered by a primary care clinician or an allergist when a patient reports symptoms and mold exposure at home or work. Some people also request it on their own through direct-access lab testing.
Preparation
No fasting or special preparation is needed. Tell the clinician about any medications or immune conditions, since these can affect antibody results.
Results and what they mean
Results are reported as levels of IgG antibodies for each mold, often with a reference range, and a clinician interprets them alongside your history, symptoms, and any home inspection. A positive result only shows that you have been exposed to a mold, not that it is making you sick. This is general information, not medical advice; discuss your results with a qualified clinician.
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 black mold exposure test (igg) 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
Does a positive result mean I have mold poisoning?
No. It means your immune system has seen that mold at some point. It cannot confirm that mold is causing your symptoms.
Can this test rule out mold exposure?
No. A negative result does not prove you were never exposed, and timing of exposure can affect results.
Do I need to fast before this test?
No fasting is required. A standard blood draw is all that is needed.
How long until results come back?
Typical turnaround is about 1 to 3 business days, though it can vary by lab.