Schuss P, et al. - In patients with non-aneurysmal subarachnoid hemorrhage (SAH), researchers desired to know whether routine laboratory markers of acute phase response are linked to unfavorable outcome. One hundred fifty-four patients with non-aneurysmal SAH were admitted to the institution from 2006 to 2017. Patients were stratified by cisternal blood distribution in perimesencephalic SAH (pSAH) vs non-perimesencephalic SAH (npSAH) patients. Evaluations of C-reactive protein (CRP) and white blood cells (WBC) were conducted within 24 hours of admission during routine laboratory work. Findings suggested an association of elevated CRP and WBC count with unfavorable outcome after non-aneurysmal SAH at admission.