× Test Guide Collection Guides Guidelines News Contact Useful Links

Laboratory Test Reference Guide

Laboratory Information

Test Name

INR

Synonyms

Warfarin monitoring

External Price (excl. GST)

10.51

Specimen Collection

Adult Specimen

2.7 mL sodium citrate tube (light blue)

Paediatric Specimen

1.8 mL paediatric sodium citrate tube (light blue)

Instructions for Referral to Waikato Lab

Aliquot instructions

500uL double spun platelet poor plasma

Aliquot Transport

Send frozen

Test Information

Department

Haematology

Test Availability

Mon - Sun, 24hrs

Reference interval

Normal Range:-0.8-1.2 (ratio) Therapeutic Range (Warfarin):-2.0-4.0 (ratio)

Minimum Volume

500uL double spun platelet poor plasma

Electronic Information

Registration Code

INR

HL7 mapping code

$INR