Sodium Citrate 1.8 mL Paed (Clear/Pale Blue Inner)
Sodium Citrate 1.0 mL Neonate (Pale Blue Top)
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.
Factor XII deficiency does not cause a bleeding tendency. Various anecdotal reports describing an association between F XII deficiency and spontaneous abortion, premature delivery, arterial and venous thrombosis, myocardial infarction, and pulmonary embolism have been published, but a definite cause-and-effect relationship has not been proven.