CSF3 and systemic lupus erythematosus: G‐CSF was detectable in 84.3% (167/198) of SLE patients and 92.1% (35/38) of HC (p = .21, Pearson's χ2 test), and there was no significant difference in serum G‐CSF concentrations between patients with SLE (median: 377.1 pg/ml, IQR: 133.6–1067.2) and HC (median: 440.5 pg/ml, IQR: 192.2–1799.2) (Figure 6A).