What Are Mycotoxins and Why Are They Dangerous in Cannabis Production?
Mycotoxins are toxic compounds produced by certain types of mold, and they pose a serious health risk in cannabis products. Understanding how mycotoxins contaminate cannabis—and how to prevent them—is crucial for cultivators, processors, and consumers alike.
What Are Mycotoxins?
Mycotoxins are naturally occurring toxins created by fungi such as Aspergillus, Penicillium, Fusarium, and Alternaria. These compounds can develop on cannabis plants when conditions like humidity, warmth, or poor airflow allow mold to grow.
Why Mycotoxins Are a Health Risk
When inhaled, ingested, or absorbed through the skin, mycotoxins can cause a range of health problems:
Respiratory illness – Especially dangerous when inhaled via smoking or vaping.
Liver and kidney damage – Certain mycotoxins like aflatoxins and ochratoxins are highly toxic.
Cancer risk – Aflatoxins are classified as carcinogenic and are linked to liver cancer.
Immune suppression – Long-term exposure can weaken the immune system.
Digestive problems – Ingested mycotoxins may cause nausea, vomiting, or diarrhea.
How Cannabis Gets Contaminated
Mycotoxins can enter the cannabis supply chain at multiple stages:
During cultivation – High humidity and poor ventilation foster mold.
After harvest – Improper drying and curing create ideal conditions for fungal growth.
In storage – Warm or damp environments allow mold to thrive over time.
Types of Mycotoxins Found in Cannabis
The two most common mycotoxins tested in cannabis are:
Aflatoxins (B1, B2, G1, G2) – Extremely toxic and carcinogenic.
Ochratoxin A – Known to cause kidney damage.
At New Bloom Labs, we use high-precision testing methods to detect even trace amounts of these harmful compounds.
Mycotoxin Testing for Cannabis Products
Many U.S. states and international regulators now require mycotoxin testing before cannabis products can be sold. Routine lab testing ensures products are safe and compliant with local laws.
New Bloom Labs offers fast and reliable mycotoxin testing for growers, manufacturers, and dispensaries.
How to Prevent Mycotoxins in Cannabis
Here are five best practices to help prevent mold and mycotoxin contamination:
Control humidity – Keep levels below 60% during cultivation and storage.
Promote air circulation – Good airflow reduces mold-friendly conditions.
Dry and cure properly – Speedy, controlled drying is critical.
Store cannabis correctly – Use sealed containers in cool, dry areas.
Test regularly – Ongoing lab testing helps catch contamination early.
Protect Your Products and Your Customers
Mycotoxins are invisible but dangerous. Don’t leave your product quality to chance.
At New Bloom Labs, we help cannabis businesses stay compliant and protect consumer health with comprehensive mycotoxin testing services.
Need a mycotoxin test? Contact us today to schedule your sample submission or learn more about our testing packages.