About Prothrombin time (inr)
What is prothrombin?
Prothrombin is a protein produced by the liver that is important for blood clotting. Blood clotting (coagulation) is an essential process for preventing excessive bleeding after an injury.
A prothrombin time test measures the time it takes for your blood to clot. The internationalised normalised ratio (INR) standardises the results of a prothrombin time test results since different laboratories may use slightly different methods and reagents.
The INR is often used to monitor the effect of blood-thinning medications such as warfarin. A high INR is associated with a greater risk of bleeding, whilst a low INR is associated with a greater risk of clotting.
Why take the test?
This test measures the speed of clotting using the standardised INR and can be used to monitor the effect of blood-thinning medications such as warfarin.
How it works
Order your kit
Just order a test online and get your kit delivered right to you door. Your kit contains everything you need for the test.
Take your test and post
Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse.
Get results directly to your dashboard
You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.
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