Which of the following tests requires the use of a blood collection tube with a gray stopper?
A) Coagulation studies
B) Blood glucose tests
C) Viral studies
D) Arterial blood gases
E) Blood cultures

Question

Quizplus · Accepted Answer

Blood glucose tests often require the use of a blood collection tube with a gray stopper because these tubes contain additives like potassium oxalate and sodium fluoride that prevent glycolysis, thereby preserving the glucose levels in the sample until analysis.

Which of the Following Tests Requires the Use of a Blood