The APTT Is the Most Common Procedure Used to Monitor

Multiple Choice

The aPTT is the most common procedure used to monitor the unfractionated heparin therapy. Which of the reagents used in the test provides the activation of the formation of the fibrin clot?

A) Thromboplastin/calcium mixture
B) Activated partial thromboplastin and calcium
C) Thrombin and fibrinogen
D) Normal pooled plasma and thrombin