Question

Which of the following statements are true in regard to the TEG?

A) The TEG measures time to clot formation in seconds.
B) The main advantage of the TEG compared to ACT is that heparin or citrated blood does not affect the results.
C) The TEG does not evaluate the integrity of platelets on the clotting process.
D) Excessive agitation of the blood sample can cause premature clot formation.
E) All of the above.

Answer 1

The TEG measures clot formation time, heparin does not affect TEG results, TEG evaluates platelet integrity, and excessive agitation can cause premature clot formation.

Step-by-step explanation:

The TEG, or Thromboelastography, is a laboratory test used to evaluate a patient's ability to form blood clots. In regards to the statements provided:

A) The TEG measures the time it takes for clot formation, not in seconds, but in minutes.

B) The main advantage of the TEG compared to ACT (Activated Clotting Time) is that heparin or citrated blood does not affect the results. This statement is true.

C) The TEG does evaluate the integrity of platelets and their role in the clotting process, so this statement is false.

D) Excessive agitation of the blood sample can indeed cause premature clot formation, making this statement true.

Therefore, the correct answer is D) Excessive agitation of the blood sample can cause premature clot formation.