Guidance Use of non-validated tests in cattle herds: guidance Terms and conditions under which Ministers can authorise the use of non-validated tests. Part of: Testing for Bovine TB: guidance and Bovine TB (Sub-topic) First published: 7 July 2021 Last updated: 7 July 2021 Documents Use of non-validated tests in cattle herds: guidance Use of non-validated tests in cattle herds: guidance , HTML HTML Related Bovine TB (Sub-topic)Use of non-validated tests in cattle herds: form