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Mosby's Exam Review for Computed Tomography – Simulated Exam with Well Explained Answer Rationales (Patient Care, Safety, Procedures, Image Production)
Mosby's Exam Review for Computed Tomography – Simulated Exam with Well Explained Answer Rationales (Patient Care, Safety, Procedures, Image Production) 
An average range for activated partial thromboplastin time (PTT) is: 
a) 10-12 seconds 
b) 17-21 seconds 
c) 25-35 seconds 
d) 43-55 seconds - ANS: C) 25-35 seconds 
 
Partial thromboplastin time (PTT) is a lab measure of blood coagulation. This value is used to screen patients for invasive procedures. BC of the individual lab practices, t...