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Pt Ptt Inr Levels. Individually these tests are commonly referred to as a prothrombin time pt partial thromboplastin time ptt and international normalized ratio inr. A prothrombin time pt is a another blood test done to help measure your inr. Normal results are typically 25 to 35. It s also called a pt pro time or inr test.
Pt inr normal values or pt inr normal range. This group of tests is known as a coagulation study. Normal results are typically 25 to 35. An elevated pt or inr means your blood is taking longer to clot than your healthcare provider believes is healthy for you. A pt measures the number of seconds it takes for a clot to form in your sample of blood after substances reagents are added. In the 1980s the world health organization determined that patients may be at risk because the results of a pt test would vary from one lab to another based upon the way the test was done.
The international normalized ratio or inr is a calculation based on results of a pt that is used to monitor individuals who are being treated with the blood thinning medication anticoagulant warfarin coumadin.
Inr pt and partial thromboplastin time ptt notes. This group of tests is known as a coagulation study. It s also called a pt pro time or inr test. This may indicate vitamin k deficiency warfarin therapy defective factor vii and liver disease. Add on coagulation requests must be made to the laboratory within 4 hours of venepuncture. A prothrombin time pt is a another blood test done to help measure your inr.