Pathology

consult haematology registrar prior to sending sample.

1.2-2.6 ug/mL

This test may be useful for monitoring patients whose PT is inconsistent with the prescribed warfarin dose, particularly when failure to comply or surreptitious drug use is suspected.

Note:    This test is not designed for evaluation of the patient with prolonged  bleeding time suspected of exposure to rat poisons in that the assay is not designed to detect superwarfarins ( the result will likely be negative in this case - which in itself may only suggest superwarfarin ingestion as opposed to Warfarin  ). For superwarfarin testing - contact Victorian Forensic Institute.