Question

You are required to collect a venous sample for a typical hematology test, the complete blood count. You collect:

A) Serum
B) Plasma
C) Whole blood
D) Buffy coat

Answer 1

The correct venous sample for a complete blood count (CBC) is whole blood, as it contains all of its components including red blood cells, white blood cells, platelets, and plasma. The buffy coat, which is a thin, pale layer containing leukocytes and platelets, separates the red blood cells from the plasma when the blood sample is centrifuged.

Step-by-step explanation:

For a typical hematology test, the complete blood count (CBC), the venous blood sample collected is whole blood. Whole blood contains all of its components, including red blood cells, white blood cells, platelets, and plasma. The buffy coat, which is a thin, pale layer containing leukocytes and platelets, separates the red blood cells from the plasma when the blood sample is centrifuged. Therefore, the correct choice for collecting a venous sample for a CBC is C) Whole blood.