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2009, Number 2

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Enf Infec Microbiol 2009; 29 (2)

Erythrocyte sedimentation rate on EDTA blood measured by capillary tubes without heparin

Lemus VML, Villaseñor SA

Language: Spanish
References: 12
Page: 66-69
PDF size: 70.83 Kb.


ABSTRACT

Background: The erythrocyte sedimentation rate (ESR) is measured to assess inflammatory response in infectious and non infectious pathologies. We evaluated the usefulness of measuring the ESR using capillary tubes without heparin on childrens anti-coagulated blood.
Materials and methods: Cross-sectional comparative study. The ESR was measured simultaneously in 100 blood samples previously anti-coagulated with ethylenediaminetetraacetic acid (EDTA), using both the Wintrobe tube (gold standard) and capillary tubes without heparin.
Results: The correlation between the Wintrobe tube and the micro-method using capillary tubes without heparin was good (r = 0.76, P ‹ 0.001). The sensitivity and specificity were 96% and 74%, respectively, and the positive and negative predictive values were 76% and 95%, respectively.
Conclusions: The measurement of ESR in anti-coagulated (EDTA) blood using the micro-method with capillary tubes without heparin is an alternative, reliable, simple, and cheap method for those patients who may need a micro-technique, and for those laboratories that lacking Wintrobe tubes.


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