Animals treated with the veterinary drug phenylbutazone - or 'bute' - are not allowed to enter the food chain as it may pose a risk to human health.
- Bute was banned from use in humans after it was found that about 1 person in 30,000 recipients suffered a serious side effect.
- Bute can cause rare cases of a serious blood disorder, aplastic anaemia.
- In levels reported in previous FSA testing of contaminated meat, the maximum level found would have to be multiplied a thousand-fold to be at the same level as which used to be given to humans.
- It suggests that even if someone eats contaminated meat, the risk of damage to their health is very low.
More top news
ITV News political correspondent examines the reaction to Labour's Pledge Stone.
The high-profile couple blamed their schedules and not being able to spend time together on their mutual decision to end their relationship.
Fans, politicians and celebs have joined in May the 4th be with you craze trending on twitter on 'Star Wars Day'.