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Comparison of serum steroid immunoassays with liquid chromatography coupled to the tandem mass spectrometry assay using weighted Deming regression accompanied by jack-knife based 95% confidence interval (95%CI) estimation (N = 49). A: Regression lines with corresponding 95%CI bands (gray area). Dotted lines represent identity lines. B: Graphical presentation of slopes’ and intercepts’ CI’s. DHEAS - dehydroepiandrosterone sulfate. OHP - 17-hydroxyprogesterone.
