laboratory diagnostic - coagulation - Factor VIII, Antihaemophilic A, citrated plasma 2ml, The plasma must be frozen within 1 hour after collection and must be sent in the frozen samples container. The factors VIII, IX, XI,XII (aPTT factors) assay requires at least 2 mL of citrated plasma frozen at -20°C. It is advisable to send a frozen and centrifuged citrate sample in compliance with the GEHT pre-analytical recomendations. Attach the clinical data relating to the patient (major inflammatory syndrome, pregnancy, etc.) and the circumstances (bleeding, thrombosis, preoperative evaluation, etc.). Send us the ABO blood group result, Chronometric, ssso, todylaboratories®, bmn, code L16LD1558