Analytical Validation of a New Enzymatic and Automatable Method for d-Xylose Measurement in Human Urine Samples

Figure 2

Comparison of the enzymatic assay versus the phloroglucinol method. The correlation and agreement between both methods was studied using (a) the weighted Deming regression, (b) the Bland-Altman plot, and (c) Bland-Altman plot of the differences between the enzymatic method and the phloroglucinol method expressed as percentages of the values on -axis versus the mean of the two measurements.

(a)

(b)

(c)