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KMID : 0374919920130030337
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Inje Medical Journal
1992 Volume.13 No. 3 p.337 ~ p.346
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A Study on Factors Affecting the Spedific Gravity, Hemoglobin and Hematocrit in Voluntary Blood Donors
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Abstract
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The purpose of this study is to compare the specific gravity of blood measured by indirect method of copper sulfate with hemoglobin and hematocrit measured by automatic cell counter(Coulter Counter, model S-plus) and to identify sociodemographic
factors
affecting the specific gravity, hemolglobin, and hematocrit. The materials consisted of blood samples taken from 240 voluntary blood donor who visited Pusan Red Cross Blood Transfusion Service and mobile blood collecting vehicles during the
period
of
January 4 to February 10, 1991.
@ES The results were as follows:
@EN 1) Positive correlation was found between the hemoglobin, hematocrit and the specific gravity(r=0.3451 and 0.3409 respectively, p<0.001). 2) The variables which affected the value of specific gravity, hemoglobin and hematocrit were
sex(p<0.001),
body weight(p<0.001), period of fasting before blood sampling (p<0.001), and amount of cigarettes smoking(p<0.001). 3) 27.8% of blood donor candidates who did not meet the inclusion criterion on the specific gravity of whole blood were actually
within
the inclusion criterion on hemoglobin (12.0g/dl). 4) 16.4% blood donor candidates who were excluded by the criterion on the specific gravity were actually good candidates with their hemoglobin value above 12.0g/dl. In conclusion, the current
method
using copper sulfate with a specific gravity of 1,052 is not ideal for blood donor screen. The method using two copper sulfate solutions with specifica gravity of 1.052 and 1.054 should be used rather than one copper sulfate solution with
specific
gravity. of 1.052.
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KEYWORD
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