Bland-Altman-plot shows the differences between the creatinine measurements determined using the Jaffé method (creatinine-J) and the enzymatic method (creatinine-E) versus the mean measurements of both methods.

<p>The horizontal reference lines show zero difference, the average difference between the measurements and the measurements plus and minus a 1.96-fold standard deviation <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0090015#pone.0090015-Bland1" target="_blank">[10]</a>.