5 V3.0 OM- VISION Pro valid from 01
st
February 2020
5
Appendix
Sedimentation Rate Correction for Variations in
Room Temperature
It is noted that sedimentation rates vary with room temperature. In high temperature, low red blood
clumping cause sedimentation at faster rate; in low temperature, intensive red blood clumping result in
slower sedimentation rate. The sedimentation rate, therefore, shall be determined within the range of
18
~25
(64
~77
). When room temperature is out of the range, the following correction nomogram
(Figure A-1, Roger W. Manley. J.Clin.Path.1957, 10:354-356.) shall be used to correct the sedimentation
rate as below:
Record the room temperature before, during and after the test and calculate the arithmetic mean value.
Then apply the mean value and observed sedimentation rate into the nomogram and connect them into
a straight line. Extend the straight line to the Correction Line. The intersection point is the corrected
sedimentation rate. For example, if the mean value of the room temperature is 30
and the observed
sedimentation rate is 30 mm/h, the corrected rate is 20 mm/h.
Fig.A-1 Sedimentation Rate Correction for Variations in Room Temperature (Westergren’s Method)
Observed Rate
(Westergren’s Method)
Correction Line
Room Temp.
Summary of Contents for VISION ESR
Page 1: ...VISION ESR Analyzer Operation Manual Released Software V1...
Page 2: ......
Page 8: ......
