Which of the following laboratory tests is used to evaluate the overall function of the coagulation cascade, including both intrinsic and extrinsic pathways?

A Prothrombin time (PT)
B Partial thromboplastin time (PTT) ✓
C Thrombin time (TT)
D Bleeding time (BT)

Explanation

The partial thromboplastin time (PTT) is a laboratory test that evaluates the overall function of the coagulation cascade, including both intrinsic and extrinsic pathways.

Source

Clinical Hematology, 1st edition
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Easy MEDICAL Confidence: high