In a cohort of 88 patients with mTBI, serum cortisol levels measured at admission and 7 h post-injury did not show a significant correlation with post-traumatic stress disorder symptoms.120 However, a noteworthy finding was the significant link between serum S100B concentrations at 10 h post-injury and post-traumatic stress disorder symptoms at the 1-year follow-up.120. Here, S100B is linked to acute stress disorder.