The traces pesticides leave in treated products or those left by veterinary drugs in animals are called "residues".
A maximum residue limit (MRL) is the highest level of a pesticide residue that is legally tolerated in or on food or feed when pesticides are applied correctly in accordance with Good Agricultural Practice.
Veterinary drug residues
The maximum residue limit (MRL) is the maximum concentration of residue legally tolerated in a food product obtained from an animal that has received a veterinary medicine.
The amounts of residues found in food must be safe for consumers and must be as low as possible.
Codex sets MRLs for all food and animal feed
The MRLs for all crops and all pesticides are publicly available on the Codex website.