The Leeds Teaching Hospitals NHS Trust

INR (International Normalised Ratio)

INR (International Normalised Ratio)

The International Normalised Ratio (INR) is derived from the prothrombin time and provides a standardised measure of anticoagulant therapy with Vitamin K antagonists, but is not valid for patients receiving other anticoagulants.

Tube 05 (CP) - Citrate
ID Tests&Tubes0068
Additional Information This test can only be added to samples within 24 hours of collection.
Turn Around A&E: N/A
Day Case: 6 Hours
In-Patient: 6 Hours
Out-Patient: 24 Hours
GP: 24 Hours
Send to Blood Sciences Cross Site
Contact For further details please contact Leeds Pathology customer services: leedsth-tr.pathologycustomerservice@nhs.net.
Collection Con Citrate tube must be filled to the fill line.

Instructions for Lab Staff: Standard lab processing- No special requirements.
Sample REQ Blood
Ref. Range Notes Blood Sciences Refernce ranges available through the useful information and links page:
https://www.leedsth.nhs.uk/a-z-of-services/pathology/blood-sciences/useful-information-and-links/
Telepath INR1L
ICE Codes LINR