Plasma neurofilament light chain (NfL) reference interval determination in an age-stratified cognitively unimpaired cohort (vol 535, pg 153, 2022)

•Well-supported cognitively unimpaired plasma NfL reference intervals were determined.•Observed 97.5th percentile NfL concentrations increased at a rate of 3.1% per year of age.•Decade-wide reference intervals will aid in the evaluation of potential neurodegeneration.