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Epic Test Code LAB320 International Normalized Ratio (INR)

Performing Location(s)

BMC,CRH,LFH,OCH,FTT,FOX

Limitations

The INR is designed to monitor long-term anticagulant effects. It is not suited to evaluate hemostatic funtion in patients (ie. liver disease, preoperative screening, etc.)

Reference Values

Analyte Population Units Reference Range High Critical Value
Prothrombin Time General population seconds 10.1-13.2  
INR General population none 0.9-1.2 >4.4
Routine oral anticoagulation none 2.0 - 3.0 >4.4
Mechanical prosthetic heart none 2.5 - 3.5 >4.4

 

Includes

The INR is a calculated parameter requiring a Prothrombin Time. It cannot be ordered alone.

Days of Analysis

All

Additional Information

See entry for "Prothrombin Time"

Methodology

Calculation

Last Updated

22-July-19 BHD