What is International Normalized Ratio (INR)?
International Normalized Ratio is measured as part of a coagulation panel. Your INR is in the normal range (around 1.0). If you're not on a blood thinner, this is expected.
What does a high International Normalized Ratio mean?
Your INR is elevated. If you take warfarin, this means your blood is thinner than baseline — your target depends on why you take it (commonly 2.0–3.0). A high INR raises bleeding risk.
If markedly elevated: Your INR is critically high, which significantly raises bleeding risk. If you take warfarin, contact your doctor promptly.
What does a low International Normalized Ratio mean?
Your INR is on the lower side. If you take warfarin, this may mean you're under-anticoagulated (higher clot risk); if you don't, it's usually not a concern.
Understand your whole report, not just one number
A single value rarely tells the full story — International Normalized Ratio is best read alongside the rest of your panel. Paste your values or upload your report and get a plain-English explanation of every marker, with the important results flagged.