Detection of abnormal hemoglobin variants during glycohemoglobin analysis.
نویسندگان
چکیده
منابع مشابه
Screening for hemoglobinopathies during routine hemoglobin A1c testing using the Tosoh G7 Glycohemoglobin Analyzer.
Approximately 5.1% of the US population has diabetes mellitus, and hemoglobin (Hb) A1c levels are routinely measured to monitor long-term glycemic control in these patients. Many laboratories use ion exchange chromatography for such measurements, and the presence of hemoglobin variants and hemoglobinopathies often results in abnormal peaks on the chromatogram. The goal of this study was to eval...
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Aim: It has been known for a long time that the presence of clinically silent hemoglobin (Hb) variants in blood samples could influence the measurement of glycohemoglobin (HbA1c) since these abnormal hemoglobins might interfere with some methodologies. In the present study we describe the first case of Hb Beckman in Turkey. Material and Methods: The variant was detected during the HbA1c measure...
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We describe a novel assay for measuring glycohemoglobin directly from anticoagulated whole blood with the Abbott IMx analyzer. The glycohemoglobin is labeled with a soluble polyanionic affinity reagent and the anionic complex is then captured with a cationic solid-phase matrix. Glycohemoglobin is quantified by measuring the quenching by heme of the static fluorescence from an added fluorophore....
متن کاملInfluence of hemoglobin variants and derivatives on glycohemoglobin determinations, as investigated by 102 laboratories using 16 methods.
Influences of hemoglobin (Hb) variants (HbSS, HbCC, beta-thalassemia, HbAE, HbAS, HbAC, hereditary persistent HbF) and Hb derivatives (carbamylated- and acetylated-Hbs, Schiff base, and those formed in stored blood) on results of glyco-Hb assays by 102 laboratories using 16 different methods were investigated. Affinity chromatography shows deviating results only with homozygous Hb S and C. Corr...
متن کاملEffects of hemoglobin variants and chemically modified derivatives on assays for glycohemoglobin.
BACKGROUND Glycohemoglobin (gHb), measured as hemoglobin (Hb) A(1c) or as total gHb, provides a common means for assessing long-term glycemic control in individuals with diabetes mellitus. Genetic variants and chemically modified derivatives of Hb can profoundly affect the accuracy of these measurements, although effects vary considerably among commercially available methods. The prevalence of ...
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ورودعنوان ژورنال:
- Clinical chemistry
دوره 26 2 شماره
صفحات -
تاریخ انتشار 1980