What Does INR Mean?

eye-en-AR
IPA: /ˌaɪˌɛnˈɑr/
eye en AR
INR is pronounced eye-en-AR

What does INR stand for?

INR stands for 'International Normalized Ratio.

How do you pronounce INR?

INR is pronounced "eye-en-AR". Syllables: eye - en - ar.

When is INR used in medicine?

Warfarin monitoring, pre-operative bleeding risk assessment, liver disease severity (elevated INR = impaired clotting factor synthesis).

Word Parts & Etymology

abbreviationInternational Normalized Ratiostandardized clotting time ratio referenced to international standard

Common Misconceptions

INR only directly measures the extrinsic coagulation pathway. It does not reflect platelet function or the intrinsic pathway (checked by aPTT).

Clinical Context

Warfarin monitoring, pre-operative bleeding risk assessment, liver disease severity (elevated INR = impaired clotting factor synthesis).

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