The EDTA blood collection tube must not be underfilled, since it has been shown to lead to:
A) high lithium levels
B) low hematocrit levels
C) low sodium levels
D) high blood cell counts
Question 2
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
