Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/128796
Título: Effects of hemoglobin variants on hemoglobin a1c values measured using a high-performance liquid chromatography method
Autores/as: Lorenzo Medina, Mercedes
De La Iglesia Íñigo, Silvia Narcisa 
Ropero, Paloma
Nogueira Salgueiro, Patricia
Santana Benitez, Jesús
Clasificación UNESCO: 32 Ciencias médicas
320708 Hematología
Palabras clave: Diabetes
Diagnosis
Glycated hemoglobin
HbA1c
Fecha de publicación: 2014
Publicación seriada: Journal of diabetes science and technology 
Resumen: Background: Hemoglobin A1c (HbA1c) is routinely used to monitor long-term glycemic control and for diagnosing diabetes mellitus. However, hemoglobin (Hb) gene variants/modifications can affect the accuracy of some methods. The potential effect of Hb variants on HbA1c measurements was investigated using a high-performance liquid chromatography (HPLC) method compared with an immunoturbimetric assay. Methods: Fasting plasma glucose (FPG) and HbA1c levels were measured in 42 371 blood samples. Samples producing abnormal chromatograms were further analyzed to characterize any Hb variants. Fructosamine levels were determined in place of HbA1c levels when unstable Hb variants were identified. Results: Abnormal HPLC chromatograms were obtained for 160 of 42 371 samples. In 26 samples HbS was identified and HbA1c results correlated with FPG. In the remaining 134 samples HbD, Hb Louisville, Hb Las Palmas, Hb N-Baltimore, or Hb Porto Alegre were identified and HbA1c did not correlate with FPG. These samples were retested using an immunoturbidimetric assay and the majority of results were accurate; only 3 (with the unstable Hb Louisville trait) gave aberrant HbA1c results. Conclusions: Hb variants can affect determination of HbA1c levels with some methods. Laboratories should be aware of Hb variants occurring locally and choose an appropriate HbA1c testing method.
URI: http://hdl.handle.net/10553/128796
ISSN: 1932-2968
DOI: 10.1177/1932296814538774
Fuente: Journal of diabetes science and technology [1932-2968], v. 8(6), p. 1168-1176 (Junio 2014)
Colección:Artículos
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