A new turbidimetric standard to improve the quality assurance of the erythrocyte sedimentation rate measurement

Objectives: The erythrocyte sedimentation rate (ESR) determined using manual or semi-automated methods has usually been judged a simple procedure that could be performed without any form of Quality Control. According to this point of view, the ESR would seem a semi-quantitative test instead of a real hematological test with any clinical importance. The new millennium has consolidated ESR automation and a QC plan cannot be postponed. Design and methods: Using Test1, an automated ESR analyzer, a new latex control material was evaluated and compared with fresh whole blood for quality control purposes. Results: The new latex control showed satisfactory reproducibility, precision, and “commutability” in comparison to quality control procedures that use fresh whole blood samples. Conclusions: The new standard represents another advance in ESR testing improving the accuracy of automated TEST1 measurements.