Inclusion Criteria:  Age >18 years old Currently receiving standard of care systemic anti-cancer therapy (chemotherapy, immunotherapy, endocrine and targeted therapy) for solid organ malignancy and has received at least one cycle Blood samples that have been stored in K2-EDTA vacutainers only For Accuracy testing: Samples covering 75% of parameter ranges (Neutrophils: 0.5-7.5 x 109/L, Platelets: 20-450 x 109/L, Haemoglobin: 70-180 g/L), These will be determined by a gold standard analyser which has been recently calibrated. Reliability study: Level range per parameter. These will be determined by a gold standard analyser which has been recently calibrated. Neutrophils (We assume WBC to behave similarly in the same ranges) Low: 0.5-1.2 x 109/L (3 samples), 1.2-2 x 109/L (2 samples) Normal: 2-7 x 109/L (3-4 samples) High: 7-12 x 109/L (1-2 samples) Platelets Low: 50-150 x 109/L (5 samples) Normal: 150-400 x 109/L (3 - 4 samples) High: >400 x 109/L (1-2 samples) Haemoglobin Low: <120 g/L (5 samples) Normal: 120-170 g/L (3 - 4 samples) High: >170 g/L (1-2 samples)  Exclusion Criteria:  History of haematological malignancy