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. VIII, IX, XI, and XII, 3 x sodium citrate tubes are required for an adult and 2 tubes for a child.
GENERAL NOTES
Factor IX has a circulating half-life of ~18 hours. The diagnosis of F IX deficiency in neonates may be confounded by the fact that F IX levels are significantly reduced at birth and may remain so for 6 months. F IX is a Vit K-dependant coagulation protein
