Summary:
To demonstrate that lay users (subjects with no laboratory training) can obtain PT/INR (Prothrombin Time/ International Normalized Ratio)results using the study monitor, which are clinically equivalent (similar) to PT/INR results obtained by trained health-care professionals (who use the same study monitor device).
Qualified Participants Must:
• Be at least 18 years of age
•
Be able to read, write and understand English
•
Be willing to give informed consent
•
Be taking a stabilized/consistent dose of warfarin (also referred to as a "blood thinner", familiar brand is Coumadin) for at least 6 weeks
•
Have transportation to the San Jose area study location for 2 visits, each approx 2-3 hours long
Qualified Participants May Receive:
Compensation for time per activity completed:
1) Visit 1 ($40)
2) Visit 2 ($40)
3) Between visit testing at home ($40)