has participant quality activated partial thromboplastin time prolonged AE DJ, SS, YH MedDRA: 10000636 部分凝血活酶时间延长 SIDER: C0853223 WEB: http://www.nlm.nih.gov/medlineplus/ency/article/003653.htm HPO: HP_0003645 CTCAE: E12073 NCIt: C27028 a hematopoietic system AE that has an outcome of a prolonged time taken for blood to clot. The partial thromboplastin time (PTT) is a blood test that looks at how long it takes for blood to clot. PTT measures the efficacy of the comon coagulation pathways and helps tell if bleeding or clotting problems exist. hematopoietic system AE AE severity G1 AE severity G2 AE severity G3