White Blood Cells (WBCs) Are More Resistant to Lysis Than

Multiple Choice

White blood cells (WBCs) are more resistant to lysis than red blood cells (RBCs) . When looking at a sample of blood for WBCs, what could you do to reduce interference from RBCs?

A) Mix the blood in a salty solution to cause the RBCs to lyse.
B) Mix the blood in an isotonic solution and allow the WBCs to float to the top.
C) Mix the blood in a hypotonic solution, which will cause the RBCs to lyse.
D) Mix the blood in a hypertonic solution, which will cause the RBCs to lyse.