Abstract: Objective To analyze the medical records of poisoned children to provide references for the forensic identification of melamine-tainted milk powder poisoning. Methods Medical records of six fatal cases of consuming some brand melamine-tainted milk powder were studied, specifically the poisoning symptoms, medical imaging, blood biochemical tests, treatment and prognosis. Results The major medical problems of these eight-month sick infants were urinary tract obstruction caused by urinary tract calculi. The poisoned infants developed oliguria, anuria and other symptoms, eventually, acute renal failure or other complications leaded to death. The serum BUN and Cr abnormally increased. Conclusion By considering the toxicological effects of melamine, it was concluded that the deaths of these sick infants were related to the melamine poisoning.

Key words: forensic toxicology, poisoning, melamine, milk powder