Abnormal Partial Thromboplastin Time in Adults and Children
https://www.hematologyandoncology.net/archives/june-2011/abnormal-partial-thromboplastin-time-in-adults-and-children/
WebIf the patient has a prolonged PTT and a normal prothrombin time (PT), it is most likely that factors within the intrinsic pathway—namely factors VIII, IX, XI, and XII—are deficient. If both the PT and the PTT are prolonged, it suggests deficiencies in the intrinsic and extrinsic pathways or even a deficiency in the final common pathway.
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