The 2am anaemia admission. The four-year-old who’s "a bit tired" with a normal Hb and MCV. The anaemic dialysis patient with a mildly raised ferritin. In each case, reticulocyte parameters could change your clinical decision-making. Join us to explore how modern analysers reveal not just red cell quantity but quality, why CHr outperforms ferritin in detecting early iron deficiency, and how IRF predicts marrow recovery before counts improve. Depending on where you work, all of these tests may already be at your fingertips. It’s time to start using them.