Test library
Mold IgG Exposure Test
The black mold exposure test (IgG) measures IgG antibodies against common indoor mold species. It is used to assess whether someone has been exposed to molds often found in damp buildings.
Order Black Mold Exposure Test (IgG)
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Black Mold Exposure Test (IgG)- Typical turnaround
- 1-3 business days
- Starting price
- From $178
- Results
- Confidential, online
Quick answer
The black mold exposure test (IgG) uses a blood sample to measure immunoglobulin G antibodies against a panel of common indoor molds. IgG can reflect exposure to a substance, which is different from the IgE antibodies involved in allergy. The test is often considered when someone has lived or worked in a damp building.
What this test measures
Molds grow in damp indoor environments, and certain dark-colored species are often loosely grouped under the term black mold. This test measures IgG antibodies against a panel of common indoor molds. IgG antibodies can reflect exposure to a substance, which is different from the IgE antibodies involved in true allergy.
The test uses a blood sample and reports IgG levels for each mold included in the panel. Because IgG can indicate past or ongoing exposure rather than allergy, results are interpreted carefully. Many people have detectable IgG to molds without any illness, so a positive result does not by itself mean mold is causing symptoms.
This test is not a diagnostic tool for mold-related illness, and it does not measure mycotoxins or environmental mold levels. A qualified healthcare provider interprets the results in the context of symptoms, home history, and other evaluations. Environmental inspection remains the primary way to identify a mold problem.
- Aspergillus-specific IgG
- Penicillium-specific IgG
- Cladosporium-specific IgG
- Alternaria-specific IgG
- Stachybotrys-specific IgG (black mold)
- Mucor-specific IgG
- Rhizopus-specific IgG
- Total serum IgG
Why people order this test
- Assess immune response after suspected mold exposure
- Support a discussion about symptoms in a damp building
- Provide context before an environmental inspection
- Follow up on water damage or visible mold
- Document exposure history with a provider
How to prepare
No fasting is required for this blood test. A sample is drawn from a vein, usually at the arm. Follow the laboratory's instructions and share any relevant exposure history with the ordering provider.
Understanding your results
Results are typically available within one to three business days. The report lists IgG levels for each mold tested. Because IgG can reflect exposure rather than disease, a qualified healthcare provider interprets the findings with your symptoms and environment.
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Frequently Asked Questions
What is the difference between IgG and IgE mold testing?
IgE antibodies are linked to allergy, while IgG antibodies can reflect exposure to a substance. This panel measures IgG, so it does not diagnose mold allergy.
Does a positive IgG result mean mold is making me sick?
No. Many people have IgG antibodies to molds without symptoms. The result indicates exposure, and a healthcare provider interprets it with your history and environment.
Does this test measure mycotoxins?
No. It measures IgG antibodies to mold species. It does not measure mycotoxins or the level of mold in a building.
How should I check my home for mold?
An environmental inspection is the main way to identify mold problems. A qualified professional can assess moisture sources and visible growth.
Do I need to fast before the test?
Fasting is not required for this blood test unless it is combined with another panel that calls for it.
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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