A realistic dose is the mycotoxin level that poultry usually get in their feed. Unrealistic levels are too high or too low to occur normally. For example, 100 ppb aflatoxin is realistic, but 5000 ppb is not unless there’s a serious storage or contamination problem.

To complicate things: realistic levels in one country or region may be unrealistic in other ones and vice versa. Climate changes or differences will certainly influence levels as well.

So an easy question but no simple answer.