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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: J Pharm Biomed Anal. 2013 Aug 23;86:10.1016/j.jpba.2013.08.007. doi: 10.1016/j.jpba.2013.08.007

Table 2.

Intra- and inter-day precision and accuracy

Intra-day Inter-day
Nominal, ng/mL 1.5 15 40 1.5 15 40
Mean, ng/mL 1.33–1.61 13.6–15.7 36.7–43.7 1.48 14.8 40.8
SD 0.03–0.06 0.3 – 0.6 0.5 –1.6 0.12 1.0 3.2
RSD, % 2.3 – 3.6 3.3 – 4.7 1.4 – 3.5 8.3 6.8 7.9
% dev. −11.1- 7.1 −9.3 - 4.3 −8.4 – 9.2 −1.7 −1.4 1.9
No. of samples 6 6 6 18 18 18