Asda said its announcement that traces of 'bute' have been found in one of its products is part of its commitment to keep customers up-to-date on its product testing regime.
The supermarket says its has carried out "more than 700" tests since news of the horsemeat scandal broke. A statement released today said:
In March 2013 we withdrew tinned Smart Price Corned Beef (340g) after receiving a positive test for horse DNA above the 1% trace level set by the Food Standards Agency.
Today ... tests on further batches have shown a positive result for very low levels of horse medication called phenylbutazone, also known as bute, at 4 parts per billion.
The FSA has reassured us that the quantities we’ve found pose a low risk to human health ...
More top news
A man accused of stabbing his father to death during a row over food has been arrested by police.
The UK's biggest ambulance service is to become the first in the country to be placed in special measures.
Footage of an armed burglar crawling on the floor of a couple's bedroom while they slept just feet away has been released by police.