How to evaluate fixed clinical QC limits vs. risk-based SQC strategies

James O Westgard^{1

2}, Hassan Bayat³, Sten A Westgard²

Affiliations

James O Westgard et al. Clin Chem Lab Med. 2022.

. 2022 Jun 14;60(9):e199-e201.

doi: 10.1515/cclm-2022-0539. Print 2022 Aug 26.

James O Westgard^{1

2}, Hassan Bayat³, Sten A Westgard²

No abstract available

Keywords: measurement uncertainty; quality specifications; statistical quality control.

Comment in

Rethinking internal quality control: the time is now.
Plebani M, Gillery P, Greaves RF, Lackner KJ, Lippi G, Melichar B, Payne DA, Schlattmann P. Plebani M, et al. Clin Chem Lab Med. 2022 Jun 29;60(9):1316-1317. doi: 10.1515/cclm-2022-0587. Print 2022 Aug 26. Clin Chem Lab Med. 2022. PMID: 35766232 No abstract available.
Reply to Westgard et al.: 'Keep your eyes wide … as the present now will later be past'.
Panteghini M. Panteghini M. Clin Chem Lab Med. 2022 Jul 4;60(9):e202-e203. doi: 10.1515/cclm-2022-0557. Print 2022 Aug 26. Clin Chem Lab Med. 2022. PMID: 35786491 No abstract available.

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1. Westgard, JO, Quam, EF, Barry, PL. Establishing and evaluating QC acceptability criteria. Med Lab Observ 1994;26:22–6.
1. Braga, F, Panteghini, M. Performance specifications for measurement uncertainty of common biochemical measurands according to Milan models. Clin Chem Lab Med 2021;59:1362–8. https://doi.org/10.1515/cclm-2021-0170.
1. Bayat, H, Westgard, SA, Westgard, JO. Planning risk-based SQC strategies: practical tools to support the new CLSI C24Ed4 guidance. J Appl Lab Med 2017;2:211–21. https://doi.org/10.1373/jalm.2017.023192.