What additive destroys the enzymes in the blood when the gray-topped tube is used to collect blood?
A) sodium citrate
B) sodium fluoride
C) sodium heparin
D) lithium heparin

Question

Quizplus · Accepted Answer

Sodium fluoride is the additive that destroys the enzymes in the blood when used in a gray-topped tube, primarily to preserve glucose levels by inhibiting glycolysis.

What Additive Destroys the Enzymes in the Blood When the Gray-Topped