Mycotoxins, as defined by Webster, are “a toxic substance produced by a fungus and especially a mold”

For growers, the definition goes much deeper. Quality is the key here. Everyone is a bit cautious when buying and selling grain.  Seeking professional analysis from a laboratory or local grain inspection service is the way to go.

In addition, the wet, fall conditions are becoming a concern for the Ag Community with respect to potential mold build-up on corn.

Today, many laboratories offer strip tests for analyzing the presence of mycotoxins. These type of tests are a step up from the general appearance of mold or corn rot but today, more analysis information is needed that looks at specific amounts. The US Grains Council website offers a good picture of the type of aflatoxin levels their officials see with respect to exports.

What does this mean for our customers?

At Midwest Laboratories, we feel the quality of grain is extremely important to our clients and we have taken steps to ensure our methodologies are part of our ISO17025 Scope.

Over the past three years, we have also worked hard to bring the turnaround time down. Today, the mycotoxin analysis for individual analysis or full screen is three to five days.  This type of turnaround for LC/MS/MS methodology puts Midwest Laboratories close to the top of the industry for this type of analysis. Rush service is also available if coordinated ahead of time.


The following guidelines can be found on the Purdue Extension Website.

Table 1. FDA’s action levels for aflatoxin in poultry feed

  • Class of Animal Feed Maximum Aflatoxin Level
    (mg/kg)1 (ppb)
  • Immature poultry Corn & peanut
    products 0.02 20
  • Mature poultry Corn & peanut
    products 0.1 100
  • Poultry Cottonseed
    meal 0.3 300
  • All animals Other feeds 0.02 20

Turnaround Time ( 5 Business Days) 

Aflatoxin (B1, B2, G1, G2)
DON (Vomitoxin)
Fumonisin (B1, B2, B3)
Ochratoxin A
T2 Toxin
Full Screen

Head to the MyLab portal or to contact a Midwest Laboratories Representative call: 402.334.7770