Which of the following test procedures requires clay to plug the tube?
A) blood smear
B) packed cell volume
C) fecal sample
D) urinalysis

Question

Quizplus · Accepted Answer

Packed cell volume (PCV) tests, also known as hematocrit tests, often require the use of clay to plug one end of the capillary tube after it is filled with blood. This helps in sealing the blood within the tube before it is centrifuged to measure the volume percentage of red blood cells in the blood.

Which of the Following Test Procedures Requires Clay to Plug