Analytical goal setting prior to selection of a method for glycated haemoglobin

M. Lytken Larsen*, O. Blaabjerg, P. Hyltoft Petersen, H. Hansen, M. Hørder

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Resumé

Without a consensus on either a reference method or a single glycated haemoglobin standard, the individual laboratory has to establish and secure its own assay method. Prior to selection of a method for glycated haemoglobin we used an assessment model and defined our clinical goals. Based on clinical goals it was possible to set up goals of analytical quality and evaluate available literature concerning the performance characteristics of different assay methods. We wanted a method that measured HbA]c, without measuring the labile intermediate pre-HbA1c, and that provided separate detection of haemoglobin variants. Low imprecision was required to secure the measured, non-diabetic reference interval, and to minimize random analytical error. We found the isoelectric focusing method the only one able to meet our goals, and a method evaluation was carried out. Clinical goals of analytical quality should always be defined before method selection and implementation. Using this model, we were able to establish a precise isoelectric focusing method that fulfilled our clinical goals by measuring HbA1c with a total coefficient of variation of 2.1% and a non-diabetic reference interval from 5.2% to 6.8% HbA1c.

OriginalsprogEngelsk
BogserieScandinavian Journal of Clinical and Laboratory Investigation
Vol/bind50
Udgave nummer7
Sider (fra-til)715-721
Antal sider7
ISSN0036-5513
DOI
StatusUdgivet - 1. jan. 1990

Fingeraftryk

Glycosylated Hemoglobin A

Citer dette

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abstract = "Without a consensus on either a reference method or a single glycated haemoglobin standard, the individual laboratory has to establish and secure its own assay method. Prior to selection of a method for glycated haemoglobin we used an assessment model and defined our clinical goals. Based on clinical goals it was possible to set up goals of analytical quality and evaluate available literature concerning the performance characteristics of different assay methods. We wanted a method that measured HbA]c, without measuring the labile intermediate pre-HbA1c, and that provided separate detection of haemoglobin variants. Low imprecision was required to secure the measured, non-diabetic reference interval, and to minimize random analytical error. We found the isoelectric focusing method the only one able to meet our goals, and a method evaluation was carried out. Clinical goals of analytical quality should always be defined before method selection and implementation. Using this model, we were able to establish a precise isoelectric focusing method that fulfilled our clinical goals by measuring HbA1c with a total coefficient of variation of 2.1{\%} and a non-diabetic reference interval from 5.2{\%} to 6.8{\%} HbA1c.",
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Analytical goal setting prior to selection of a method for glycated haemoglobin. / Larsen, M. Lytken; Blaabjerg, O.; Petersen, P. Hyltoft; Hansen, H.; Hørder, M.

I: Scandinavian Journal of Clinical and Laboratory Investigation, Bind 50, Nr. 7, 01.01.1990, s. 715-721.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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AU - Larsen, M. Lytken

AU - Blaabjerg, O.

AU - Petersen, P. Hyltoft

AU - Hansen, H.

AU - Hørder, M.

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AB - Without a consensus on either a reference method or a single glycated haemoglobin standard, the individual laboratory has to establish and secure its own assay method. Prior to selection of a method for glycated haemoglobin we used an assessment model and defined our clinical goals. Based on clinical goals it was possible to set up goals of analytical quality and evaluate available literature concerning the performance characteristics of different assay methods. We wanted a method that measured HbA]c, without measuring the labile intermediate pre-HbA1c, and that provided separate detection of haemoglobin variants. Low imprecision was required to secure the measured, non-diabetic reference interval, and to minimize random analytical error. We found the isoelectric focusing method the only one able to meet our goals, and a method evaluation was carried out. Clinical goals of analytical quality should always be defined before method selection and implementation. Using this model, we were able to establish a precise isoelectric focusing method that fulfilled our clinical goals by measuring HbA1c with a total coefficient of variation of 2.1% and a non-diabetic reference interval from 5.2% to 6.8% HbA1c.

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