Test Guide | Te Whatu Ora - Health New Zealand Waikato Laboratory Website

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