Clinical Chemistry
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Clinical Chemistry 45: 154, 1999;
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(Clinical Chemistry. 1999;45:154.)
© 1999 American Association for Clinical Chemistry, Inc.

Letters

Correction: Evaluation of the Menarini-Arkray HA 8140 Hemoglobin A1c Analyzer

Jennifer A. Nisbeta and Frances G. Boa

St. Georges' Hospital, Department of Clinical Biochemistry, Blackshaw Road, London SW17 0QT, United Kingdom
a Author for correspondence. Fax 44 181 682 0744.


To the Editor:

John et al. (1) have evaluated the performance of the Menarini-Arkray HbA1c analyzer and have shown correlations of results on patient samples with the Bio-Rad Variant analyzer, an in-house HPLC method, a latex particle immunoassay, and an affinity chromatography method. The y = x lines in Fig. 2, b and d, do not appear to be in the correct position, probably because the x and y axes are numbered differently.


References

  1. John WG, Braconnier F, Miedema K, Aulesa C, Piras G. Evaluation of the Menarini-Arkray HA 8140 hemoglobin A1c analyzer. Clin Chem 1997;43:968-975.[Abstract/Free Full Text]

Dr. John responds:

W. Garry John

Department of Clinical Biochemistry, The Royal London Hospital, London E1 1BB, United Kingdom, Fax 44 171 377 7777, E-mail garry.john{at}btinternet.com
a Author for correspondence. Fax 44 181 682 0744.


To the Editor:

Drs. Nisbet and Boa are correct in their observation. The error occurred because the computer generated a 45-degree line without taking the axes into consideration. The addition of this line was at the reviewer's request, and was therefore done at a late stage in the production of the manuscript.

The statistical calculations and regression lines are correct.

The article's message is unchanged.





This Article
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Related Collections
Right arrow Endocrinology and Metabolism

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