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Anales de la Facultad de Medicina

Print version ISSN 1025-5583


SALDANA O, Ítalo Moisés. Reliability of a gas analyzer to determine glycemia compared to the conventional laboratory method. An. Fac. med. [online]. 2014, vol.75, n.3, pp.227-232. ISSN 1025-5583.

Objectives: To determine the glucose reliability results measured in a gas equipment as compared with a reference method commonly used in the laboratory. The Clinical and Laboratory Standards Institute (CLSI) guide EP9- A2 instructions were followed. Design: Descriptive study with non-probability sampling. Setting: Hospital Edgardo Rebagliati Martins, EsSalud, Lima, Peru. Materials: Blood sample of 234 subjects from the emergency services and intensive care unit. Methods: Blood glucose was processed with the ADVIA1800 equipment and the ABL800 gasometer. Results of both analyzers were compared following the mentioned guide directives, the Bland-Altman plot analysis and the Lin’s concordance correlation coefficient (CCC) calculation. Main outcome measures: Serum glucose concentration. Results: Average blood glucose levels obtained were 1.6 mg/dL higher for ABL800 than for ADVIA1800. Both methods showed a high positive correlation (beta coefficient 0.9995 and 95%, 95%CI 0.9994 to 0.9996). Glucose results for the method studied were acceptable, as confirmed with the Bland-Altman statistical analysis(0.9995 CCC value, 95%CI 0.9993 to 0.9996). Conclusions: The ABL800 analyzer is suitable for blood glucose monitoring, presenting an excellent correlation with the reference laboratory method.

Keywords : Reliability; serum glucose; Clinical and Laboratory Standards Institute Guide EP9- A2; systematic error.

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