Sodium Citrate 1.8 mL Paed (Clear/Pale Blue Inner)
Blood (neonate)
1.0 mL
Sodium Citrate 1.0 mL Neonate (Pale Blue Top)
COLLECTION NOTES
Accurate filling of specimen tube essential. Specimens must be transported at room temperature to the Laboratory in a red specimen bag ASAP. (Maximum delay to testing laboratory must not exceed 2hrs) * If several factor assays are requested e.g. II, V,VII and X, a total of 3 x sodium citrate tubes are required for an adult and 2 tubes for a child.
GENERAL NOTES
Prothrombin has a biological half-life of 3 days. Fewer than 100 cases of prothrombin deficiency have been described. Acquired F II deficiency may be due to liver disease and Vit K deficiency/antagonism. Antibodies against F II can be seen in patients with the lupus anticoagulant or the antiphospholipid syndrome and on rare occasions as isolated cases.
