Question

Which of the following laboratory values is used to measure the coagulation ability of a patient prior to an invasive CT study?

1. PTT
2. Hematocrit
3. PT
A. 1 only
B. 1 and 3 only
C. 2 and 3 only
D. 1, 2, and 3

Answer 1

The laboratory value used to measure the coagulation ability of a patient prior to an invasive CT study is PTT (Partial Thromboplastin Time).

Step-by-step explanation:

The laboratory value used to measure the coagulation ability of a patient prior to an invasive CT study is PTT (Partial Thromboplastin Time). PTT measures the time it takes for blood to clot, and an abnormal PTT value may indicate a bleeding disorder or a risk of excessive bleeding during the procedure.

Hematocrit and PT (Prothrombin Time) are not specific tests for measuring coagulation ability.