An accelerated APTT result from a sample with a visible clot should be canceled.
Tripodi A, Chantarangkul V, Martinelli I, Bucciarelli P, Mannucci PM. A shortened activated partial thromboplastin time is associated with the risk of venous thromboembolism. Blood. 2004;104(12):3631–3634.
Lippi G, Salvagno GL, Ippolito L, Franchini M, Favaloro EJ. Shortened activated partial thromboplastin time: causes and management. Blood Coagul Fibrinolysis. 2010;21(5):459–463.
Clarence Chan, MD, PhD
Fellow, Clinical Chemistry
Department of Pathology
University of Chicago
Chicago, Ill.
Junior Member, CAP Hemostasis and Thrombosis Committee
Jacob Ritter, MD
Post-graduate Year-four Pathology Resident
Department of Pathology and Laboratory Medicine
UT Health San Antonio
Long School of Medicine
San Antonio, Tex.
Junior Member, CAP Hemostasis and Thrombosis Committee
Editor: Frederick L. Kiechle, MD, PhD
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