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. Author manuscript; available in PMC: 2016 Jul 15.
Published in final edited form as: Clin Chem. 2015 Mar 3;61(5):752–759. doi: 10.1373/clinchem.2014.235333

Table 3. Demonstration of the impact of different chosen criteria on the % of 342 laboratories passing for the BV and SM models.

Biological Variation Sigma-metrics
Criterion % Labs pass Criterion Chance Failure TAE 10 (0.91) TAE 7 (0.64) TAE 6 (0.55) TAE 5 (0.46) TAE 4 (0.37) TAE 3 (0.27) TAE 2 (0.18) TAE 1 (0.09)
Optimum 2 6 σ 71 46 30 19 10 2 1 0
Desirable 18 4 σ 89 67 57 44 25 12 2 0
Minimum 48 2 σ 100 95 89 77 60 38 16 1