Figure 1 | Scientific Reports

Figure 1

From: Validity of different copeptin assays in the differential diagnosis of the polyuria-polydipsia syndrome

Figure 1

Intra-assay difference in copeptin concentrations in healthy volunteers. Bland–Altman graph of intra-assay difference in copeptin concentrations in healthy volunteers for (a) the KRYPTOR, (b) the LIA and (c) the ELISA. The dotted middle line represents the mean difference in copeptin concentrations between the two different assays (a): − 0.08 pmol/l (95% limits − 0.75 to 0.48), (b): − 0.55 pmol/l (95% limits − 6.69 to 5.59), (c): 0.92 pmol/l (95% limits − 17.32 to 19.16)). The outer dotted lines represent the 95% confident interval limits of agreement. (a) KRYPTOR 1 vs KRYPTOR 2, (b) LIA 1 vs LIA 2, (c) ELISA 1 vs ELISA 2.

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