INR (النسبة الدولية المعيارية)

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For the INR, "normal" depends entirely on whether you take an anticoagulant (a vitamin K antagonist), and we do not know that. If you do not, your INR sits around 1.0. If you do, your thrombosis service sets a target range — usually 2.0-3.0 or 2.5-3.5, and for some mechanical valves as low as 1.5-2.0. An INR of 2.5 is then exactly right, and not an abnormal result. A single reference interval would either falsely reassure one group or falsely alarm the other, so we state none. Follow the target range set by your thrombosis service.