Low blood counts are a common side effect of chemotherapy treatment. White blood cells defend the body from infection and a low white blood cell count can result in serious infection and problematic delays to chemotherapy treatment. From a simple finger prick test, AffinityTM can help people identify if their blood cell counts are dropping whilst at home, in between chemotherapy cycles. This can help prevent infection and keep treatment on track, as well as avoid unnecessary trips to hospital. AffinityTM provides a secure and supportive link between patient and clinician by automatically sharing results in real time.