Inclusion Criteria:  Adult (>18y) Owing a social security insurance Any solid cancer diagnosed by histopathology or cytology Patient with blood sampling required as per standard of care Informed consent signed  Exclusion Criteria:  Refusal to participate No blood sampling required as per standard of care Hemoglobin < 7g/dl (< 9g/dl if respiratory or cardiovascular disease history) Heterologous blood transfusion in the last 48 hours Weight under 20 kg