24.
With the Wintrobe-Landsberg method, which tube is used to draw 5 ml of blood by
venipuncture?
a. Green top vacuum tube.
b. Lavender top vacuum tube.
c.
Red lined tube.
d. Blue lined tube.
25.
After the Wintrobe tube is placed in a rack in an exactly vertical position and the
time and room temperature are noted, when is a reading taken and what is
observed?
a. At the end of exactly 1 hour, read the level to which the red cells have settled
on the descending scale etched on the tube.
b. At the end of exactly 2 hour, read the level to which the red cells have settled
on the descending scale etched on the tube.
c.
Within 15 minute, read the level to which the red cells have settled on the
ascending scale etched on the tube.
d. In 5 minutes, read the level to which the red cells have settled on the
descending scale etched on the tube.
26.
If measurement of the ESR is delayed more than 2 hours after blood collection,
the reading may be inaccurate because of a:
a. False varied sedimentation rate.
b. False low sedimentation on rate.
c.
False high sedimentation rate.
d. Varied sedimentation rate.
MD0853
6-23