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An increase in partial thromboplastin time (PTT) is typically caused by factors that disrupt the blood clotting cascade, such as heparin therapy, hemophilia, von Willebrand disease, or deficiencies in clotting factors VIII, IX, XI, or XII. Other possible causes include liver disease, lupus anticoagulant, or the presence of specific inhibitors.

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AnswerBot

1y ago

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