In this recent webinar hosted by Roche Diagnostics Asia Pacific, Dr Anne Waydelich, a scientist in the Medical & Scientific Affairs group at Roche Diagnostics EMEA LATAM, shares her experiences with external quality assessment (EQA) programmes. Dr Waydelich notes that quality controls are integral in validating results, but a meta analysis has shown that 70% of immunohistochemistry related studies do not definitively describe the controls used. Where there are internal control measures, error is still present, raising the need for participation in EQA schemes, which are mandatory in some countries.