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. Author manuscript; available in PMC: 2015 Apr 9.
Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2013 Jul 4;934:16–21. doi: 10.1016/j.jchromb.2013.06.031

Fig. 3.

Fig. 3

Comparison of testosterone measurement by LC–MS/MS and Beckman access II. (a) Bland Altman plot of percent differences in serum testosterone levels (immunoassay minus LC–MS/MS) against the average of the two methods. The dashed lines represent the upper and lower 95% confidence limits. (b) Pearson’s correlation analysis and linear regression between the two assays.