2013 horse meat scandal only found more than 1% horse DNA in Asda's tins of but it also contained four ppb of phenylbutazone, marking the first time since the start of the scandal that bute had been detected in a meat product in the UK food chain. However, one problem raised was over documentation; all of the UK animals with phenylbutazone contamination tested in early 2013 possessed a "horse passport" that allowed the carcasses to be sold for human consumption. The veterinary residues committee (VRC) reminded the public in July 2012 that it had been "repeatedly expressing concern" about phenylbutazone contamination. and recent discoveries
Tesco International operations format namely: Tesco Extra Mutiara Damansara, Tesco Extra Bandar Bukit Puchong, Tesco Extra Ara Damansara, Tesco Extra Seberang Jaya, Tesco Extra Desa Tebrau, Tesco Extra Bandar Bukit Tinggi in Klang, Tesco Extra Mutiara Rini and Tesco Extra Ipoh Garden. Tesco Malaysia offers a value range, its own branded range, electronic goods, the loyalty clubcard and clothing. Tesco Malaysia's Clubcard introduced Green Clubcard Points in 2007 making Tesco Malaysia the first Tesco international business to introduce the Green Clubcard Points scheme. In April 2013, Tesco Malaysia launched the Grocery Home Shopping Service, where it delivers groceries ordered via the Internet to