The color of the blood tube that is usually first in sequence for filling and is without an anticoagulant (used for blood typing and cross-matching) is:
A) blue.
B) green.
C) red.
D) gray.

Question

Quizplus · Accepted Answer

The tube without an anticoagulant and used for blood typing and cross-matching is the red top tube. This tube allows the blood to clot, and can then be used to separate the serum from the blood cells for testing.

The Color of the Blood Tube That Is Usually First