Sodium Citrate 1.8 mL Paed (Clear/Pale Blue Inner)
Sodium Citrate 1.0 mL Neonate (Pale Blue Top)
Accurate filling of specimen tube is essential.
The PT is a screening test for the extrinsic coagulation pathway. It is frequently used to monitor anticoagulant therapy using vitamin K antagonists such as warfarin by conversion to an international normalised ratio (INR). A prolonged Prothrombin time in a patient taking Rivaroxaban may suggest significant levels of the drug. A Rivaroxaban assay may be of value..