Why is the pipet held upright immediately after drawing the diluting fluid to the 11"
mark and mixing it with the specimen?
a. To indicate a "snake-like" line.
b. To wash the blood.
To dilute the blood better.
d. To prevent air bubbles in the bulb.
Which WBCs are counted?
a. Those touching the inner left-hand bottom lines.
b. All WBCs outside the squares.
All WBCs within the square and those touching the upper and right hand
d. All WBCs within the square and those touching the upper and left- hand center
How many 1-sq-mm comer areas and chambers are used to count WBCs?
a. 3; 4.
b. 4; 2.
Which chemical is mixed with whole blood when obtaining a WBC count?
a. Sodium chloride.
b. Weak acid.
d. Calcium carbonate.