![]() Talk to your doctor if you think INR self-testing is suitable for you. This device is not subsidised – you would have to pay for it in full. Some people prefer to monitor their INR by themselves using a coagulation self-testing device. You can find out if a pharmacy near you offers CPAMS (external link). Your GP is also informed of the INR result, as they have overall responsibility for your care. Patients taking oral anticoagulants are required to monitor INR to adjust the VKA doses because these vary between patients. It can also be used to assess the risk of bleeding or the coagulation status of the patients. If you develop bleeding while your INR is too high, it can be life-threatening. If your INR is too high, you’re at increased risk of bleeding. If you’re taking these medications, your target INR range may be between 2 and 3.5. The pharmacist measures your INR levels using a finger prick test and can tell you the dose of warfarin to take. Introduction International normalized ratio (INR) is the preferred test of choice for patients taking vitamin K antagonists (VKA). A normal INR range is 0.8 to 1.1 if you’re not taking anticoagulant medications. Some pharmacies in New Zealand have a warfarin service called the Community Pharmacy Anti-Coagulation Management Service (CPAMS). Here is a brief simplified chart of human blood INR Range, showing INR levels, and the factors that affect them. Your INR result will be passed onto your GP. ![]() ![]() This sample is then sent to a laboratory for analysis. It is recommended that the same method be used to monitor the anticoagulation therapy over time. Blood collection centreĪcross New Zealand there are blood collection centres where a phlebotomist (someone who is trained to take blood) collects a blood sample from your vein. In New Zealand you can get your INR test done at a blood collection centre (such as MedLab) and some community pharmacies.
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