Author Correction: A fluorometric assay to determine labile copper(II) ions in serum

Correction to: Scientific Reports 10.1038/s41598-023-39841-9, published online 07 August 2023

The original version of this Article contained errors in Figure 4c. The values for ‘Storage temperature’, displayed on the X-axis, were inadvertently changed into the mean values of the depicted bars. The original Figure 4 and accompanying legend appear below.

Figure 4.

Stability of labile Cu²⁺ in serum. Repeatability and reproducibility of the assay are shown, including relative standard deviation (RSD) (a). Labile Cu²⁺ concentration in the reference serum depending on the number of freeze–thaw cycles (b) and storage temperature (c) are depicted. The labile Cu²⁺ concentration in 1% human reference serum upon spiking with 0 or 20 nM CuSO₄ (N = 4) is presented (d). Statistically significant differences between labile Cu²⁺ values were determined with non-parametric Kruskal–Wallis with Dunn’s multiple comparison test (b), ordinary one way ANOVA followed by Tukey multiple comparison test (c), and unpaired t-test (*p < 0.05, **p < 0.01; ***p < 0.001). Results are presented as data points including mean ± SD of at least three independent experiments.

The original Article has been corrected.