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Erythrocyte Sedimentation Rate: A Physics-Driven Characterization in a Medical Context
Published on: March 24, 2023
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Test-1 analyzer and conventional Westergren method for erythrocyte sedimentation rate: A comparative study between
Cigdem Sonmez1, Ozlem Ceylan Dogan2, Aysegul Ozturk Kaymak3
1Central Laboratory, Dr. Abdurrahman Yurtaslan Oncology Education and Research Hospital, Ankara, Turkey.
Journal of Clinical Laboratory Analysis
|January 18, 2018
Summary
This study compared the Test-1 method and the Westergren method for measuring erythrocyte sedimentation rate (ESR), finding that instrument choice depends on hospital factors and patient hematocrit levels.
Area of Science:
- Hematology
- Clinical Chemistry
Background:
- Erythrocyte sedimentation rate (ESR) is a common hematology test.
- Accurate ESR measurement is crucial for diagnosing and monitoring various conditions.
Purpose of the Study:
- To compare ESR measurements between the Test-1 method and the ICSH reference Westergren method.
- To analyze the impact of hematocrit (Hct) on ESR results.
Main Methods:
- Compared ESR results from 755 patients using Test-1 and Westergren methods.
- Analyzed ESR and Hct distributions and corrected low Hct values using Fabry's formula.
Main Results:
- Correlation coefficient (r) of 0.77 (P < .001) between Test-1 and Westergren methods.
- Acceptable linearity (P < .01) but variations in subgroups with high ESR or low Hct.
Conclusions:
- Hospital role and testing capacity influence instrument selection for ESR.
- Patient profile, including malignancy risk and Hct, is vital for choosing the appropriate ESR testing method.
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