Association of High Calcitriol Serum Levels and Its Hydroxylation Efficiency Ratio with Disease Risk in SLE Patients with Vitamin D Deficiency

Figure 1

Vitamin D serum metabolites and vitamin D hydroxylation efficiency ratio from SLE patients vs. HS. (a) Calcidiol serum levels of SLE patients (5.1–40.4 ng/mL) vs. HS (14.8–40.2 ng/mL); (b) calcitriol serum levels of SLE patients (22.1–103 pg/mL) vs. HS (8.92–89.8 pg/mL); (c) efficiency of vitamin D hydroxylation by the calcitriol/calcidiol ratio of SLE patients (0.73–10.5 pg/ng) vs. HS (0.30–4.31 pg/ng). Data provided in median (– in parenthesis); Mann–Whitney test. SLE: systemic lupus erythematosus; HS: healthy subjects.

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