When the Electronic Impedance Principle Is Used to Count Blood

Multiple Choice

When the electronic impedance principle is used to count blood cells,what is done to increase platelet-counting sensitivity?

A) Decrease the size of the RBC/platelet aperture.
B) Increase the size of the RBC/platelet aperture.
C) Use a strong lysing agent to selectively lyse the RBCs.
D) Lower the upper threshold for counting platelets so that even microcytic red cells are excluded.