CoaguChek XS PST Meters- IVD (Patient Self-Testing) measures blood-clotting time for people who are taking anticoagulation medications such as Coumadin or warfarin. Catalog 04837738001
Possible Misinterpretation of Displayed Measuring Units from INR to %Quick or Seconds; providing instructions to users for ensuring the meter is displaying INR results
US Nationwide
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=Z-0804-2021