I do a blood test for coagulation the results was inr= 1.23 and prothrombin time activity was 67% and all other values are normal so what is that mean?
Such results can only be interpreted within a clinical context, i.e., according to the specifics of your medical condition, your medical background (including any history of bleeding tendency, established or suspected family history of blood disorders, medications that affect blood clotting abilities), and also equally important is the normal range of INR (internartional normalized ratio), PT (prothrombin time), and PTT (partial thrombin time) in the particular lab you have done those tests.
But it can be said that in general, in cases in which there is an isolated prolongation of the PT and the remainder of the screening tests (APTT, TT and Fibrinogen) are normal - the next likely culprit is Factor VII deficiency. Factor VII deficiency is rare and it is more common to detect a prolonged PT in association with other abnormalities of the screen, such as a prolonged APTT. The history including a drug history and the examination are of paramount importance.
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