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. Author manuscript; available in PMC: 2024 May 15.
Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2023 Apr 21;1223:123725. doi: 10.1016/j.jchromb.2023.123725

Table I.

Inter-day and intra-day PEth QC statistics.

Inter-assay Statistics Intra-assay Ranges
Theoretical
Concentration
(ng/mL)
5.00 12.5 80.0 400
Mean 5.23 12.6 87.5 436 LLOQ Low
QC
Mid
QC
High
QC
SD 0.377 1.14 7.83 27.4 %CV, min 4.1 5.4 5.2 1.4
CV (%) 7.2 9.0 8.9 6.3 %CV, max 9.0 10.6 12.8 8.0
Deviation from Nominal (%) 4.6 0.7 9.4 9.1 %error, min 1.5 −3.6 7.2 5.1
n 18 18 18 18 %error, max 6.6 7.4 12.5 14.3