I was started on Coumadin without these tests but today they finally ordered them. What are they looking for and what do they mean?
Can anyone tell me about the hypercoagability blood tests?
Added 21 Mar 2011:
I am familiar with the PT/INR test to monitor the progress of the medicine which we are still working to regulate. My question is about the hypercoaguability panel of tests...they took 7 tubes of blood to look for various protein deficiencies, and other things...I don't know what all that means.
Coumadin thins the blood by reducing its ability to clot. The tests are run to determine the clotting ability, measured in time, of the blood. The test is called the prothrombin (PT) test, the results of which are used to determine the INR. (international normalized ratio) The test requires a specific quantity of blood to be taken and the amount of time to clot is determined to explain it simply.
The reference range for the PT is 11 -16 while the reference range for the INR is 0.8 - 1.2. The clinician will want the INR to be on the high side such as 2.5 when the patient is taking coumadin (warfarin) because that means the blood is sufficiently thinned.
I suspect this is what the doctor has ordered for you. This is a simple explanation but I think you can get the idea. If you want to read more about these tests go to:
Hope this helps,
When they did these tests on me, they were looking for any blood mutations, such as Factor V Leiden, that are hereditary and affect your ability to clot. I found out that I have Factor V so after my surgery I was pre-disposed to have clots. Ended up with massive pulomonary embolism and my heart stretched out to accomadate the clots going through. Following site had some good answers.
- Coumadin Information for Consumers
- Coumadin Information for Healthcare Professionals (includes dosage details)
- Side Effects of Coumadin (detailed)
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