laboratory diagnostic - hematology - Erythropoietin, EPO, serum or heparin plasma 1ml; Do not use EDTA plasma or haemolysed samples. sample in morning (variations during day), The plasma must be frozen within 1 hour after collection and must be sent in the frozen samples container, Chemiluminescence, ssso, todylaboratories®, bmn, code L16LD1733