Lab
INR medical abbreviation
INR means "international normalized ratio".
Each meaning matched at least two public references (3 in all for INR), checked October 23, 2026. The table lists them.
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What INR means
| Meaning | Latin origin | Where used | Checked against |
|---|---|---|---|
| international normalized ratio | None | Lab orders, Charting |
Example
Sample lab order: "PT/INR."
A made-up line that shows the abbreviation in place. It is not about any patient and is not an instruction.
Related abbreviations
Elsewhere on Rivvi
Questions
What does INR mean in medical terms?
INR means "international normalized ratio".
Where is INR used?
INR shows up in lab orders and charting. Its category here is lab.
Is INR on the Joint Commission Do Not Use list?
No. INR is not on the Joint Commission Do Not Use list or the ISMP error-prone list as checked on October 23, 2026.