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. Author manuscript; available in PMC: 2016 Dec 1.
Published in final edited form as: Ther Drug Monit. 2015 Dec;37(6):812–820. doi: 10.1097/FTD.0000000000000209

Figure 5.

Figure 5

Bland-Altman plot showing average values of cortisol derived from the ELISA and LCMS methods presented on the x-axis and absolute differences between the two methods presented on the y-axis. Scatterplot suggests a positive relationship between the absolute differences and average cortisol values (95% agreement limits −1075, +1991).