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 that 97% of its goods are sourced from Thailand. By March 2013, Thailand operations were generating £3 billion in revenues and were one of the company's largest businesses outside of the UK. Tesco entered Turkey in 2003 and uses the trading name "Tesco Kipa". Tesco remains focused on building infrastructure in Turkey to complete its expansion plans and introduced the Tesco Express format into Turkey in 2006. There are plans to increase the rate of expansion as basic infrastructure is built. The first Tesco Extra in Turkey opened in Izmir, Turkey, Tesco Kipa Extra Balçova in September 2010. In June