In this webinar Alex Draper discusses some of the ancillary tests that are available as additional tools to cytology/histopathology in the diagnostic workup of canine lymphoma/leukaemia. Reviewing the principles of clonality testing (PARR), immunocytochemistry (ICC), and flow cytometry, and which type of information each of these tests provide. She also covers which ancillary test may be most appropriate to confirm a suspicion of lymphoproliferative disease, or to further characterise a lymphoma based on initial cytological findings, and review sample requirements. This webinar is provided by BSAVA Education Partner IDEXX. A collection of IDEXX ‘topic of the month’ webinars is available here.