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. Author manuscript; available in PMC: 2016 Jun 15.
Published in final edited form as: Clin Chim Acta. 2015 Apr 8;446:54–60. doi: 10.1016/j.cca.2015.03.025

Table 1.

Imprecision of Capillarys 2 Flex Piercing HbA1c assay.

NGSP units
% HbA1c
Mean		 Imprecision (CV, %)
Center 1 Center 2 Inter-
laboratory
Within-
run		 Between-run Total Within-
run		 Between-
run		 Total Total
4.7 2.2 0.0 2.3 2.0 0.0 2.0 2.1
6.3 1.2 0.6 1.4 1.4 0.4 1.5 1.4
7.4 1.2 0.7 1.4 1.3 0.0 1.3 1.3
11.1 1.1 0.5 1.2 0.9 0.4 1.0 1.1
SI units
HbA1c
Mean
(mmol/mol)		 Imprecision (CV, %)
Center 1 Center 2 Inter-
laboratory
Within-
run		 Between-run Total Within-
run		 Between-
run		 Total Total
28 3.7 0.0 3.8 3.4 0.9 3.5 3.7
45 1.9 0.7 2.0 2.1 0.7 2.2 2.1
57 1.7 0.9 2.0 1.9 0.0 1.9 1.9
98 1.3 0.5 1.4 1.0 0.5 1.2 1.3