Furthermore, the FN‐category correlated with inflammation‐related proteins such as CRP (R = 0.44), SAA1 (R = 0.44), and SAA2 (R = 0.40), and their levels were indeed increased in samples obtained from patients with mild‐FN and complicated‐FN compared to non‐fever patient samples (Figure 2C). Here, SAA1 is linked to Fever.