If you are on a Non-Vitamin K Oral Anticoagulant (NOAC), you do not require serial monitoring of your INR levels. Examples of NOACs include apixaban (eliquis), rivaroxaban (xarelto), dabigatran (pradaxa), edoxaban (lixiana). Warfarin is the only anti-coagulant used that requires monthly monitoring of your INR, and sometimes with dose changes more frequent monitoring is required. When your INR is in the right range for your medical condition, it is considered ‘therapeutic’.