Tainted milk powder was not responsible for the apparent early onset of puberty in three infant girls, China’s Health Ministry said. This follows tests of products made by Qingdao-based Synutra International (SYUT.NASDAQ), the Wall Street Journal reported. Zhang Weiguo, president of Synutra, said the finding was “a vindication of what we always believed,” adding that the company would look into the origin of the allegations in case they were linked to stock price manipulation. Synutra’s shares have fallen 30% since August 6. The parents of the three girls claimed that the company’s milk powder was responsible for their daughters developing breasts and carrying abnormally high levels of the hormone estradiol. Synutra buys key ingredients from overseas, including milk powder from New Zealand’s Fonterra (FCGHA.NZX) and France’s Euroserum.