In the article titled “Serum Neurofilament Light Chain for Prognosis of Outcome After Cardiac Arrest,”1 published online October 29, 2018, and in the January 2019 print issue, there were 2 errors in Table 2. At the 24-hour time-point for serum neurofilament light chain, the cutoff levels corresponding to specificities 0.95 and 0.88 were reversed. The cutoff level in the seventh row of the table given as 154 should have been 286, and the cutoff level in the eighth row given as 286 should have been 154. In addition, the cutoff level for 1.00 specificity at 24 hours given as 12 317 pg/mL should have been 1232 pg/mL. This article was corrected online.