Do I have to check my INR if I am taking other anticoagulation medications?

Warfarin is just one of many different anticoagulation medications that are available in Canada. There are also medications called direct oral anticoagulants (DOACs). Examples of medications in this class include apixaban (Eliquis®), dabigatran (Pradaxa®), edoxaban (Lixiana®) and rivaroxaban (Xarelto®). On the other hand, you may be taking antiplatelet medications such as ASA (Aspirin®), clopidogrel (Plavix®), or ticagrelor (Brilinta®).

The INR measures your blood clotting risk only if you are taking warfarin. As a result, you do not need to check your INR if you are taking other anticoagulants. Nonetheless, your doctor may ask you routinely at appointments about recent signs of clots or bleeds and other questions related to your medical history. It is important to keep an up-to-date record of your medications, even those that are available over-the-counter such as ASA (Aspirin®), as they may affect your clotting or bleed risk.

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