Reader response: Acute elevation of serum inflammatory markers predicts symptom recovery after concussion

I read with interest the article by Nitta et al.1 A validated biofluid (blood or CSF) or imaging biomarker for sports-related concussion (SRC) remains elusive, but the search continues. Different grades of SRC are encountered, ranging from a football player getting his bell rung, but with no accompanying loss of consciousness, to an athlete getting knocked out in the field with accompanying loss of consciousness and posttraumatic amnesia of...