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
Factor X has a biological half-life of 40 hours. Acquired deficiency is most commonly seen in Vit K deficiency/antagonism, and liver disease. Isolated F X deficiency has been reported in association with respiratory infections, AML, myeloma, and other malignancies. F X deficiency in patients with amyloidosis is due to adsorbtion of F X onto amyloid fibrils - these patients may have F X levels from 2-50%
