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Pathology Departments Requesting & Reporting Blood Test Information Phlebotomy Guide Contact us
Blood Sciences

Blood Test Information

minimum sample volume required ~ 2.7ml

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Tube type: 9NC

Special instructions
Citrate sample must be received in the lab A.S.A.P. or at worst within 8 hours. Please note that the etched fill indicator on the plastic citrate tubes indicates the minimum acceptable blood volume required for analysis. Time limit for add on = <8 hours Interfering substances = hirudin, lupus anticoagulant, warfarin

Please note that this test is not accredited to ISO:15189 due to recent changes in equipment. This test has been verified internally and accreditation has been applied for.

Reference range
Normal= 0.89-1.11 Theraputic=2.0-4.0


Linked to
Clotting screen

Turnaround Time
1 day

Department: Haematology

Clinical Application
Used to monitor warfarin therapy

» Paediatric normal ranges


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