Keeping in mind the mechanical and technical factors, why is it important that the
ESR tube be exactly perpendicular?
a. A tilt of 50 can cause errors up to 55 percent.
b. A tilt of 30 can cause errors up to 30 percent.
A tilt of 10 can cause errors up to o. 05 percent.
d. There are no other factors that effect the ESR tube.
What other mechanical and technical factors are important and why when working
with the ESR tube or holding rack?
a. Spilling the ESR tube or tilting holding rack can affect the ESR, as can large
changes in temperature.
b. Static electricity or movement of the ESR tube or holding rack can affect the
ESR, as can large changes in temperatube.
Vibration or movement of the ESR tube or holding rack can affect the ESR as
can large changes in temperature.
d. There are no other factors.
When determining the ESR, using the Wintrobe-Landsberg method, what happens
to the anticoagulated blood and how is this procedure measured?
a. The anticoagulated blood is placed in a narrow tube/
b. The blood cells settle out of the suspension, leaving clear plasma above them.
The distance that the erythrocytes fall within a given interval of time is
d. a, b, and c all happen.
e. a and d happen.
None of the above.