20.
When performing a WBC count, what is done when the white cell count is
exceptionally reduced as in the case of leukopenia?
a. The dilution should be made in the red blood cell diluting pipet.
b. The blood is drawn to the "1.0" mark and the diluting fluid is drawn to the "11"
mark. The resulting dilution is 1:100.
c.
The white pipet should be filled to the "1.0" mark and diluted to the "11" mark
with two percent acetic acid. The resulting dilution is 1:10.
d. The count is corrected calculating the observed count x 100 divided by 100 +
the percent of nucleated erythrocytes.
21.
When performing a WBC count, what is done when the white cell count is
exceptionally high as in the case of leukemia?
a. The dilution should be made in the red blood cell diluting pipet. The blood is
drawn to the "1.0" mark and the diluting fluid is drawn to the "101" mark. The
resulting dilution is 1:100.
b. The white pipet should be filled to the "1.0" mark and diluted to the "11" mark
with 2 percent acetic acid. The resulting dilution is 1:10.
c.
The count is corrected calculating the observed count x 100 divided by 100 +
the percent of nucleated erythrocytes.
d. Add 10 percent of the count to the total number of cells counted + the percent
of nucleated erythrocytes.
22.
If blood for a WBC count is drawn to the "1.0" mark on a RBC diluting pipet, and
diluting fluid to the "101" mark, what is the WPC count of the patient if the average
of two chamber counts is 356?
a. 22,250 WBCs per cu mm.
b. 44,500 WBCs per cu mm.
c.
89,000 WBCs per cu mm.
d. 178,000 WBCs per cu mm.
MD0853
5-24