WHO sets tolerable melamine levels

The tolerable daily intake for melamine is 0.2 mg per kg of body weight, a level set by international experts at a meeting organized by the World Health Organization.
The level is lower than previously suggested and is meant to help national authorities set safe limits in food for withdraw purposes if melamine is detected as the result of intentional contamination. This level represents the tolerable amount of unavoidable contaminant in food that may be ingested on a daily basis without appreciable health risk.
Melamine, a chemical compound, was the contaminant implicated in the 2007 petfood recalls.