DEFRA starts using gamma interferon test more to tackle TB
UK - The number of gamma interferon tests being carried out in England and Wales to detect bovine tuberculosis will increase from Monday (23 October).The gamma tests will be carried out in certain specific circumstances including on cattle which have given a negative skin test but which are in herds with new TB incidents in low-risk areas.
However, the test will also be available as a tool to help control disease in high-risk areas.
Source: fwi.co.uk