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Materials that simulate clinical samples and are used with diagnostic erythrocyte sedimentation rate (ESR) tests to monitor assay performance and ensure the accuracy of test results.
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ESR-Chex is a whole blood sed-rate control for automated and manual ESR testing methods. It is available in two levels and assayed for the most frequently used sedimentation rate tubes in conjunction with the Classical Westergren, Modified Westergren and Wintrobe methods.