The microINR System is a portable device, intended for monitoring patients under warfarin therapy. It measures prothrombin time (PT) expressed in International Normalized Ratio (INR) units. The microINR System is intended both for healthcare professionals at Point of Care settings, as well as patient self-testing. The microINR System consists of a microINR Meter (reader) and microINR Chips (strips-consumables). System specifications: Testing fresh capillary whole blood from a fingerstick. Sample volume; at least 3uL, System ISI for whole blood is approximately 1, Meter Specifications: View data history, up to 199 tests, rechargeable battery, 2 buttons (for time and data settings). Integrated and independent on-board QC.