laboratory diagnostic - coagulation - Factor X, Stuart-Prower, activity, citrated plasma 2ml, The plasma must be frozen within 1 hour after collection and must be sent in the frozen samples container, The factors II, V, VII, X (prothrombin complex factors) assay requires at least 2 mL of citrate 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.) Chronometric, ssso, todylaboratories®, bmn, code L16LD1563