Kostas Stamatopoulos, MD, PhD from the Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece, emphasises the importance of standardising testing for biomarkers throughout the world, but also how health inequalities are a major barrier to this. This interview was recorded at the International Workshop on Chronic Lymphocytic Leukemia (iwCLL) 2017 in New York, NY.