INR (International Normalised Ratio) 
Alternate Test Names
Prothrombin time; PT 
PLS Test Code
INR 
Laboratory
Haematology 
Specimen
Blood 
Analysis Performed On
Plasma 
Container
Sodium citrate Tube 2.7 ml 
Container Colour
Blue 
Multiple Specimens
 
Required Volume Adult (mL)
Req Vol Paediatric (mL)
Reference Ranges
Adults: <1.2 
Turnaround Time Routine
4 Hours 
Turnaround Time Urgent
30 Minutes 
Turnaround Other
 
Days test is performed
Daily 
Transport
Keep at room temperature 
Special Requirements
Sodium citrate tubes must be filled to the line. Keep at room temperature, should be delivered within 4 hours. Record if patient is on any anticoagulants and state what type. If pathology warfarin dosing is required for new patients, answer all questions on INR form. 
Patient Preparation
None 
Collection Instructions
Venepuncture 
Clinical Information
 
Sent to Reference Laboratory
No 
Ref Laboratory Name
 
Estimated Patient Fee
N/A 
Last Updated
13-Apr-2016  (Version:1.02 )

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