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Faculdade de Letras, Revista de Saúde Pública, 4(38), p. 585-587, 2004

DOI: 10.1590/s0034-89102004000400017

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Comparison between the HemoCue® and an automated counter for measuring hemoglobin

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

To determine the precision and agreement of the hemoglobin (Hb) measurements in capillary and venous blood samples by the HemoCue  and an automated counter. Hb was determined by both equipaments in blood samples of 29 pregnant women. The HemoCue  showed low repeatability of Hb measurements in duplicate in capillary (CR=0.53 g/dL, CV=13.6%) and venous blood (CR=0.53 g/dL, CV=13.6%). Hb measurements in capillary blood were higher than those in venous blood (12.4 and 11.7 g/dL, respectively; p<0.05). There was high agreement between Hb in capillary blood by the HemoCue  and in venous blood by the counter (r icc =0.86; p<0.01), and also between the diagnosis of anemia by both equipments (k=0.81; p<0.01). The HemoCue  seems to be more appropriate for capillary blood and require training of the measurers. Resumo Com o objetivo de avaliar a precisão e concordância na determinação de hemoglobina (Hb) em sangue capilar e venoso, utilizando-se o HemoCue  e um contador automático, foram estudadas 29 gestantes. O HemoCue  apresentou baixa repetibilidade para as medidas em duplicata em sangue capilar (CR=0,53 g/dL; CV=13,6%) e venoso (CR=0,53 g/dL; CV=13,6%). As medidas de Hb obtidas em sangue capilar foram mais altas do que as obtidas em sangue venoso (12,4 e 11,7 g/ dL, respectivamente; p<0,05). Verificou-se alta concordância entre medidas de Hb em sangue capilar obtidas pelo HemoCue  e em sangue venoso pelo contador (r icc =0,86; p<0,01), bem como entre os diagnósticos de anemia realizados nos dois equipamentos (k=0,81; p<0,01). O HemoCue  parece ser mais apropriado para análise de Hb em sangue capilar, mas é necessário um treinamento dos analisadores.