Safety of melamine bowls for serving hot food in question

Taiwanese researchers tested the urine of 12 healthy participants 12 hours after they ate noodle soup from melamine or ceramic bowls. Three weeks later they switched bowls and were tested again. 

The total melamine excretion in the urine of those using melamine bowls was 8.35µg, and 1.31µg for those using ceramic bowls.